Posts by Tag

• algorithms 404
• python 277
• codesquad 205
• implementation 56
• sorting 54
• string 43
• array 37
• data-structure 32
• dfs 31
• hash-table 30
• math 30
• greedy 29
• tree 26
• bfs 23
• stack 20
• graph 20
• java 17
• binary-tree 17
• queue 15
• binary-search 15
• dp 15
• divide-and-conquer 14
• linked-list 12
• recursion 12
• priority-queue 12
• two-pointers 11
• ioc 10
• sliding-window 9
• brute-force 8
• two-pointer 8
• heap 6
• back-tracking 6
• bit-manipulation 5
• stirng 5
• bit-mask 5
• sort 4
• design 4
• binary-search-tree 4
• trie 3
• prefix-sum 2
• counting 2
• object 2
• permutation 2
• combinatorics 2
• database 2
• deque 2
• merge-sort 2
• lca 2
• quick-select 2
• spring-boot 2
• big-oh 1
• comparable 1
• generic 1
• oop 1
• time-complexity 1
• avl-tree 1
• hash 1
• red-black-tree 1
• lru 1
• memorization 1
• combinaiton 1
• simulation 1
• bitmask 1
• counting-sort 1
• interview 1
• number-theory 1
• counter 1
• hash-function 1
• postgresql 1
• union-find 1
• combination 1
• sweeping 1
• dnf 1
• geometry 1
• matrix 1
• mask 1
• monotonic-queue 1
• greddy 1
• parsing 1
• memoization 1
• setting 1
• 2021 카카오 채용연계형 인턴십 1
• Summer/Winter Coding(2019) 1
• 2019 KAKAO BLIND RECRUITMENT 1
• 2020 KAKAO BLIND RECRUITMENT 1
• 2021 KAKAO BLIND RECRUITMENT 1
• 2022 KAKAO BLIND RECRUITMENT 1
• 2023 KAKAO BLIND RECRUITMENT 1
• monitoring 1
• actuator 1
• micrometer 1
• prometheus 1
• grafana 1
• reflection 1
• servlet 1
• upload 1

algorithms

[Programmers] 표현 가능한 이진트리 (Python)

January 11 2024

algorithms, python, 2023 KAKAO BLIND RECRUITMENT

[Programmers] 양과 늑대 (Python, Java)

December 14 2023

algorithms, python, 2022 KAKAO BLIND RECRUITMENT

[Programmers] 광고 삽입 (Python, Java)

December 14 2023

algorithms, python, 2021 KAKAO BLIND RECRUITMENT

[Programmers] 기둥과 보 설치 (Python, Java)

December 07 2023

algorithms, python, java, 2020 KAKAO BLIND RECRUITMENT

[Programmers] 길 찾기 게임 (Python, Java)

December 07 2023

algorithms, python, java, 2019 KAKAO BLIND RECRUITMENT

[Programmers] 멀쩡한 사각형 (Python)

November 30 2023

algorithms, python, Summer/Winter Coding(2019)

[Programmers] 표 편집 (Python)

November 30 2023

algorithms, python, 2021 카카오 채용연계형 인턴십

[Programmers] 조이스틱 (Python)

November 24 2023

algorithms, python, greedy

[Programmers] 체육복 (Python)

November 23 2023

algorithms, python, greedy

[Programmers] 모의고사 (Python)

November 02 2023

algorithms, python, brute-force

[Programmers] 최소직사각형 (Python)

November 01 2023

algorithms, python, brute-force

[Programmers] H-Index (Python)

October 31 2023

algorithms, python, sorting

[Programmers] 가장 큰 수 (Python)

October 30 2023

algorithms, python, sorting

[Programmers] K번째수 (Python)

October 27 2023

algorithms, python, sorting

[Programmers] 디스크 컨트롤러 (Python)

October 25 2023

algorithms, python, heap

[Programmers] 더 맵게 (Python)

October 24 2023

algorithms, python, heap

[Programmers] 주식가격 (Python)

October 23 2023

algorithms, python, stack, queue

[Programmers] 다리를 지나는 트럭 (Python)

October 20 2023

algorithms, python, stack, queue

[Programmers] 프로세스 (Python)

October 19 2023

algorithms, python, stack, queue

[Programmers] 기능개발 (Python)

October 18 2023

algorithms, python, stack, queue

[Programmers] 올바른 괄호 (Python)

October 17 2023

algorithms, python, stack, queue

[Programmers] 같은 숫자는 싫어 (Python)

October 16 2023

algorithms, python, stack, queue

[Programmers] 베스트앨범 (Python)

October 13 2023

algorithms, python, hash-table

[Programmers] 의상 (Python)

October 12 2023

algorithms, python, hash-table

[Programmers] 전화번호 목록 (Python)

October 11 2023

algorithms, python, hash-table

[Programmers] 완주하지 못한 선수 (Python)

October 10 2023

algorithms, python, hash-table

[Programmers] 폰켓몬 (Python)

October 09 2023

algorithms, python, hash-table

[BaekJoon] 1992번: 쿼드트리 (Python)

September 22 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1780번: 종이의 개수 (Python)

September 21 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1074번: Z (Python)

September 20 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2630번: 색종이 만들기 (Python)

September 19 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2447번: 별 찍기 - 10 (Python)

September 18 2023

algorithms, python, divide-and-conquer

[BaekJoon] 1890번: 점프 (Python)

September 15 2023

algorithms, python, dp

[BaekJoon] 2293번: 동전 1 (Python)

September 14 2023

algorithms, python, dp

[BaekJoon] 2688번: 줄어들지 않아 (Python)

September 13 2023

algorithms, python, dp

[BaekJoon] 10844번: 쉬운 계단 수 (Python)

September 12 2023

algorithms, python, dp

[BaekJoon] 2156번: 포도주 시식 (Python)

September 11 2023

algorithms, python, dp

[LeetCode] 509. Fibonacci Number (Python)

September 09 2023

python, algorithms, math, dp, recursion, memoization

[BaekJoon] 16953번: A -> B (Python)

September 08 2023

algorithms, python, greedy, bfs

[BaekJoon] 1715번: 카드 정렬하기 (Python)

September 07 2023

algorithms, python, greedy, priority-queue

[BaekJoon] 13305번: 주유소 (Python)

September 06 2023

algorithms, python, greedy

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

September 05 2023

algorithms, python, math, greedy, string, parsing

[BaekJoon] 1931번: 회의실 배정 (Python)

September 04 2023

algorithms, python, greedy, sorting

[LeetCode] 455. Assign Cookies (Python)

September 03 2023

python, algorithms, array, two-pointer, greddy, sorting

[LeetCode] 406. Queue Reconstruction by Height (Python)

September 03 2023

python, algorithms, array, greedy, sorting

[LeetCode] 134. Gas Station (Python)

September 03 2023

python, algorithms, array, greedy

[LeetCode] 122. Best Time to Buy and Sell Stock II (Python)

September 03 2023

python, algorithms, array, dp, greedy

[BaekJoon] 21921번: 블로그 (Python)

September 01 2023

algorithms, python, sliding-window

[BaekJoon] 15961번: 회전 초밥 (Python)

August 31 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 2559번: 수열 (Python)

August 30 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 12891번: DNA 비밀번호 (Python)

August 29 2023

algorithms, python, string, sliding-window

[BaekJoon] 2096번: 내려가기 (Python)

August 28 2023

algorithms, python, dp, sliding-window

[LeetCode] 76. Minimum Window Substring (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 424. Longest Repeating Character Replacement (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[BaekJoon] 11811번: 데스스타 (Python)

August 25 2023

algorithms, python, mask, bit-mask

[BaekJoon] 15787번: 기차가 어둠을 헤치고 은하수를 (Python)

August 24 2023

algorithms, python, implementation, bit-mask

[BaekJoon] 17419번: 비트가 넘쳐흘러 (Python)

August 23 2023

algorithms, python, math, string, bit-mask

[BaekJoon] 2961번: 도영이가 만든 맛있는 음식 (Python)

August 22 2023

algorithms, python, brute-force, bit-mask, back-tracking

[BaekJoon] 1740번: 거듭제곱 (Python)

August 21 2023

algorithms, python, bit-mask

[LeetCode] 461. Hamming Distance (Python)

August 19 2023

python, algorithms, bit-manipulation

[LeetCode] 191. Number of 1 Bits (Python)

August 19 2023

python, algorithms, divide-and-conquer, bit-manipulation

[LeetCode] 371. Sum of Two Integers (Python)

August 19 2023

python, algorithms, math, bit-manipulation

[LeetCode] 136. Single Number (Python)

August 19 2023

python, algorithms, array, bit-manipulation

[BaekJoon] 7795번: 먹을 것인가 먹힐 것인가 (Python)

August 18 2023

algorithms, python, binary-search, two-pointer

[BaekJoon] 2343번: 기타 레슨 (Python)

August 17 2023

algorithms, python, binary-search

[BaekJoon] 2512번: 예산 (Python)

August 16 2023

algorithms, python, binary-search

[BaekJoon] 2110번: 공유기 설치 (Python)

August 15 2023

algorithms, python, binary-search

[BaekJoon] 2805번: 나무 자르기 (Python)

August 14 2023

algorithms, python, binary-search

[LeetCode] 704. Binary Search (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[LeetCode] 33. Search in Rotated Sorted Array (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 240. Search a 2D Matrix II (Python)

August 12 2023

python, algorithms, array, binary-search, divide-and-conquer, matrix

[LeetCode] 167. Two Sum II - Input Array Is Sorted (Python)

August 12 2023

python, algorithms, array, two-pointer, binary-search

[BaekJoon] 2437번: 저울 (Python)

August 11 2023

algorithms, python, greedy, sorting

[BaekJoon] 1449번: 수리공 항승 (Python)

August 10 2023

algorithms, python, greedy, sorting

[BaekJoon] 1744번: 수 묶기 (Python)

August 09 2023

algorithms, python, greedy, sorting

[BaekJoon] 2075번: N번째 큰 수 (Python)

August 08 2023

algorithms, python, data-structure, sorting, priority-queue

[BaekJoon] 1202번: 보석 도둑 (Python)

August 07 2023

algorithms, python, data-structure, greedy, sorting, priority-queue

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 75. Sort Colors (Python)

August 05 2023

python, algorithms, array, two-pointers, sorting, dnf

[LeetCode] 242. Valid Anagram (Python)

August 05 2023

python, algorithms, hash-table, string, sorting

[LeetCode] 179. Largest Number (Python)

August 05 2023

python, algorithms, array, string, greedy, sorting

[BaekJoon] 2170번: 선 긋기 (Python)

August 04 2023

algorithms, python, sorting, sweeping

[BaekJoon] 2470번: 두 용액 (Python)

August 03 2023

algorithms, python, sorting, binary-search, two-pointer

[BaekJoon] 11497번: 통나무 건너뛰기 (Python)

August 02 2023

algorithms, python, greedy, sorting

[BaekJoon] 1302번: 베스트셀러 (Python)

August 01 2023

algorithms, python, string, sorting, hash-table

[BaekJoon] 11399번: ATM (Python)

July 31 2023

algorithms, python, greedy, sorting

[LeetCode] 56. Merge Intervals (Python)

July 29 2023

python, algorithms, array, sorting

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 147. Insertion Sort List (Python)

July 29 2023

python, algorithms, linked-list, sorting

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[BaekJoon] 14725번: 개미굴 (Python)

July 27 2023

algorithms, python, data-structure, string, tree, trie

[BaekJoon] 11000번: 강의실 배정 (Python)

July 26 2023

algorithms, python, data-structure, greedy, priority-queue, sorting

[BaekJoon] 1715번: 카드 정렬하기 (Python)

July 25 2023

algorithms, python, data-structure, greedy, priority-queue

[BaekJoon] 1927번, 11279번: 최소 힙, 최대 힙 (Python)

July 24 2023

algorithms, python, data-structure, priority-queue

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

[LeetCode] 208. Implement Trie (Prefix Tree) (Python)

July 22 2023

python, algorithms, hash-table, string, design, trie

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[BaekJoon] 3584번: 가장 가까운 공통 조상 (Python)

July 21 2023

algorithms, python, graph, tree, lca, dfs

[BaekJoon] 11437번: LCA (Python)

July 20 2023

algorithms, python, graph, tree, lca

[BaekJoon] 2263번: 트리의 순회 (Python)

July 19 2023

algorithms, python, tree, recursion, divide-and-conquer

[BaekJoon] 5052번: 전화번호 목록 (Python)

July 18 2023

algorithms, python, data-structure, string, sorting, tree

[BaekJoon] 9372번: 상근이의 여행 (Python)

July 17 2023

graph

[LeetCode] 1313. Decompress Run-Length Encoded List (Python)

March 12 2023

python, algorithms, array

[Programmers] [1차] 캐시 (Python)

March 11 2023

2018 KAKAO BLIND RECRUITMENT

[LeetCode] 21. Merge Two Sorted Lists (Python)

March 10 2023

python, algorithms, linked-list, recursion

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

[LeetCode] 118. Pascal’s Triangle (Python)

March 08 2023

python, algorithms, array, dp

[LeetCode] 136. Single Number (Python)

March 07 2023

python, algorithms, array, bit-manipulation

[LeetCode] 206. Reverse Linked List (Python)

March 06 2023

python, algorithms, linked-list, recursion

[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Python)

March 05 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 2574. Left and Right Sum Differences (Python)

March 04 2023

python, algorithms, array, prefix-sum

[LeetCode] 94. Binary Tree Inorder Traversal (Python)

March 03 2023

python, algorithms, stack, tree ,dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

March 02 2023

python, algorithms, tree, dfs, bfs, binary-tree

[Programmers] 신고 결과 받기 (Java)

March 01 2023

2022 KAKAO BLIND RECRUITMENT

[Programmers] 크레인 인형뽑기 게임 (Java)

March 01 2023

2019 카카오 개발자 겨울 인턴십

[Programmers] 개인정보 수집 유효기간 (Java)

February 28 2023

2023 KAKAO BLIND RECRUITMENT

[Programmers] 성격 유형 검사하기 (Java)

February 28 2023

2022 KAKAO TECH INTERNSHIP

[Programmers] 신규 아이디 추천 (Java)

February 22 2023

2021 KAKAO BLIND RECRUITMENT

[Programmers] 키패드 누르기 (Java)

February 22 2023

2020 카카오 인턴십

[LeetCode] 35. Search Insert Position (Java)

February 22 2023

array, binary-search

[LeetCode] 226. Invert Binary Tree (Java)

February 22 2023

tree, depth-first-search, breadth-first-search, binary-tree

[Programmers] 다트 게임 (Java)

February 19 2023

2018 KAKAO BLIND RECRUITMENT

[Programmers] 실패율 (Java)

February 18 2023

2019 KAKAO BLIND RECRUITMENT

[Programmers] 숫자 문자열과 영단어

February 08 2023

2021 카카오 채용연계형 인턴십

[Programmers] [1차] 비밀지도 (Java)

February 08 2023

2018 KAKAO BLIND RECRUITMENT

[LeetCode] 763. Partition Labels (Java)

February 08 2023

Partition Labels

[HackerRank] Append and Delete (failed) (Java)

February 07 2023

Append and Delete, implementation

[HackerRank] Super Reduced String (Java)

February 05 2023

Super Reduced String, implementation

[HackerRank] Number Line Jumps (Java)

February 04 2023

Number Line Jumps, implementation

[Inflearn] 자바(Java) 알고리즘 문제풀이 코테대비 - Array(1, 2차원 배열)

February 03 2023

큰 수 출력하기, 보이는 학생, 가위 바위 보, 피보나치 수열, 소수(에라토스테네스 체)

[Codeforces] 25A - IQ test (Java)

January 30 2023

IQ test, implementation, brute-force

[Inflearn] 자바(Java) 알고리즘 문제풀이 코테대비 - String(문자열)

January 28 2023

문자 찾기, 대소문자 변환, 문장 속 단어, 단어 뒤집기, 특정 문자 뒤집기, 중복 문자 제거, 회문 문자열, 유효한 펠린드롬, 숫자만 추출, 가장 짧은 문자 거리, 문자열 압축, 암호

[LeetCode] 2413. Smallest Even Multiple (Java)

January 25 2023

Smallest Even Multiple

[LeetCode] 2535. Difference Between Element Sum and Digit Sum of an Array (Java)

January 24 2023

Difference Between Element Sum and Digit Sum of an Array

[LeetCode] 2469. Convert the Temperature (Java)

January 23 2023

Convert the Temperature

[LeetCode] 83. Remove Duplicates from Sorted List (Java)

January 18 2023

Remove Duplicates from Sorted List

[LeetCode] 7. Reverse Integer (Java)

January 18 2023

Reverse Integer

[LeetCode] 1. Two Sum (Java)

January 18 2023

Two Sum

[Programmers] 3진법 뒤집기 (Java)

January 15 2023

3진법 뒤집기

[Programmers] 부족한 금액 계산하기 (Java)

January 14 2023

부족한 금액 계산하기

[Programmers] 약수의 개수와 덧셈 (Java)

January 13 2023

약수의 개수와 덧셈

[Programmers] 내적 (Java)

January 12 2023

내적

[Programmers] 없는 숫자 더하기 (Java)

January 11 2023

없는 숫자 더하기

[Programmers] 음양 더하기 (Java)

January 08 2023

음앙 더하기

[Programmers] 나머지가 1이 되는 수 찾기 (Java)

January 07 2023

나머지가 1이 되는 수 찾기

[BaekJoon] 1076번: 저항 (Java)

January 04 2023

저항, implementation

[BaekJoon] 1009번: 분산처리

January 04 2023

algorithms, implementation

[BaekJoon] 11047번: 동전 0

December 29 2022

동전 0, greedy

[BaekJoon] 11399번: ATM (Java)

December 28 2022

ATM, greedy

[BaekJoon] 2839번: 설탕 배달 (Java)

December 27 2022

설탕 배달, greedy

[Codeforces] 520A - Pangram (Java)

December 26 2022

Pangram

[Codeforces] 131A - cAPS lOCK (Java)

December 25 2022

cAPS lOCK

[Codeforces] 208A - Dubstep (Java)

December 24 2022

Dubstep

[Codeforces] 228A - Is your horseshoe on the other hoof? (Java)

December 23 2022

Is your horseshoe on the other hoof?

[Codeforces] 705A - Hulk (Java)

December 22 2022

Hulk

[Codeforces] 61A - Ultra-Fast Mathematician (Java)

December 21 2022

Ultra-Fast Mathematician

[Codeforces] 200B - Drinks (Java)

December 20 2022

Drinks

[Codeforces] 318A - Even Odds (Java)

December 19 2022

Even Odds

[Codeforces] 133A - HQ9+ (Java)

December 18 2022

HQ9+

[Codeforces] 486A - Calculating Function (Java)

December 17 2022

Calculating Function

[Codeforces] 344A - Magnets (Java)

December 16 2022

Magnets

[Codeforces] 136A - Presents (Java)

December 15 2022

Presents

[Codeforces] 467A - George and Accommodation (Java)

December 14 2022

George and Accommodation

[Codeforces] 1030A - In Search of an Easy Problem (Java)

December 13 2022

In Search of an Easy Problem

[Codeforces] 677A - Vanya and Fence (Java)

December 12 2022

Vanya and Fence

[Codeforces] 271A - Beautiful Year (Java)

December 11 2022

Beautiful Year

[Codeforces] 41A - Translation (Java)

December 10 2022

Translation

[Codeforces] 266B - Queue at the School (Java)

December 09 2022

Queue at the School

[Codeforces] 734A - Anton and Danik (Java)

December 08 2022

Anton and Danik

[Codeforces] 116A - Tram (Java)

December 07 2022

Tram

[Codeforces] 110A - Nearly Lucky Number (Java)

December 06 2022

Nearly Lucky Number

[Codeforces] 977A - Wrong Subtraction (Java)

December 05 2022

Wrong Subtraction

[Codeforces] 96A - Football (Java)

December 04 2022

Football

[Codeforces] 59A - Word (Java)

December 03 2022

Word

[Codeforces] 69A - Young Physicist (Java)

December 02 2022

Young Physicist

[Codeforces] 617A - Elephant (Java)

December 01 2022

Elephant

[Codeforces] 546A - Soldier and Bananas (Java)

November 30 2022

Soldier and Bananas

[Codeforces] 791A - Bear and Big Brother (Java)

November 29 2022

Bear and Big Brother

[Codeforces] 266A - Stones on the Table (Java)

November 28 2022

Stones on the Table

[Codeforces] 236A - Boy or Girl (Java)

November 27 2022

Boy or Girl

[Codeforces] 118A - String Task (Java)

November 26 2022

String Task

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Word Capitalization

[Codeforces] 339A - Helpful Maths (Java)

November 24 2022

Helpful Maths

[Codeforces] 112A - Petya and Strings (Java)

November 23 2022

Petya and Strings

[Codeforces] 263A - Beautiful Matrix (Java)

November 22 2022

Beautiful Matrix

[Codeforces] 282A - Bit++ (Java)

November 21 2022

Bit++

[Codeforces] 50A - Domino piling (Java)

November 20 2022

Domino piling

[Codeforces] 158A - Next Round (Java)

November 19 2022

Next Round

[Codeforces] 1A - Theatre Square (Java)

November 18 2022

Theatre Square

[Codeforces] 231A - Team (Java)

November 17 2022

Team

[Codeforces] 71A - Way Too Long Words (Java)

November 16 2022

Way Too Long Words

[Codeforces] 4A - Watermelon (Java)

November 15 2022

Watermelon

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November 14 2022

Smart Number

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November 13 2022

Tower Breakers

[HackerRank] Maximum Perimeter Triangle (Java)

November 12 2022

Maximum Perimeter Triangle

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November 11 2022

Luck Balance

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November 10 2022

Permuting Two Arrays

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November 08 2022

Priyanka and Toys

[HackerRank] Marc’s Cakewalk (Java)

November 07 2022

Marc’s Cakewalk

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Minimum Absolute Difference in an Array

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November 05 2022

Happy Ladybugs

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November 04 2022

Modified Kaprekar Numbers

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November 03 2022

Two Strings

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November 02 2022

Strange Counter

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November 01 2022

Flipping bits

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Making Anagrams

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October 31 2022

Beautiful Binary String

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October 30 2022

Maximizing XOR

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October 29 2022

Mark and Toys

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October 28 2022

Lonely Integer

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October 27 2022

Find the Median

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October 26 2022

String Construction

[HackerRank] Counting Sort 2 (Java)

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[HackerRank] Counting Sort 1 (Java)

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Counting Sort 1

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October 23 2022

The Love-Letter Mystery

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October 22 2022

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October 21 2022

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[HackerRank] Circular Array Rotation (Java)

October 20 2022

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[HackerRank] Save the Prisoner! (Java)

October 19 2022

Save the Prisoner!

[HackerRank] Running Time of Algorithms (Java)

October 18 2022

Running Time of Algorithms

[HackerRank] Funny String (Java)

October 17 2022

Funny String

[HackerRank] Pangrams (Java)

October 16 2022

Pangrams

[HackerRank] Mars Exploration (Java)

October 15 2022

Mars Exploration

[HackerRank] Correctness and the Loop Invariant (Java)

October 14 2022

Correctness and the Loop Invariant

[HackerRank] Insertion Sort - Part 2 (Java)

October 13 2022

Insertion Sort - Part 2

[HackerRank] CamelCase (Java)

October 12 2022

CamelCase

[HackerRank] Intro to Tutorial Challenges (Java)

October 11 2022

Intro to Tutorial Challenges

[HackerRank] Fair Rations (Java)

October 10 2022

Fair Rations

[HackerRank] Lisa’s Workbook (Java)

October 09 2022

Lisa’s Workbook

[HackerRank] Service Lane (Java)

October 08 2022

Service Lane

[HackerRank] Chocolate Feast (Java)

October 07 2022

Chocolate Feast

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October 06 2022

Halloween Sale

[HackerRank] Minimum Distances (Java)

October 05 2022

Minimum Distances

[HackerRank] Beautiful Triplets (Java)

October 04 2022

Beautiful Triplets

[HackerRank] Taum and B’day (Java)

October 03 2022

Taum and B’day

[HackerRank] Sherlock and Squares (Java)

October 02 2022

Sherlock and Squares

[HackerRank] Jumping on the Clouds (Java)

October 01 2022

Jumping on the Clouds

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September 30 2022

Equalize the Array

[HackerRank] Libary Fine (Java)

September 29 2022

Libary Fine

[HackerRank] Repeated String (Java)

September 28 2022

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[HackerRank] Cut the sticks (Java)

September 27 2022

Cut the sticks

[HackerRank] Extra Long Factorials (Java)

September 26 2022

Extra Long Factorials

[HackerRank] Find Digits (Java)

September 25 2022

Find Digits

[HackerRank] Jumping on the Clouds: Revisited (Java)

September 24 2022

Jumping on the Clouds: Revisited

[HackerRank] Sequence Equation (Java)

September 23 2022

Sequence Equation

[HackerRank] Beautiful Days at the Movies (Java)

September 22 2022

Beautiful Days at the Movies

[HackerRank] Viral Advertising (Java)

September 21 2022

Viral Advertising

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September 20 2022

Angry Professor

[HackerRank] Designer PDF Viewer (Java)

September 19 2022

Designer PDF Viewer

[HackerRank] Utopian Tree (Java)

September 18 2022

Utopian Tree

[HackerRank] The Hurdle Race (Java)

September 17 2022

The Hurdle Race

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September 16 2022

Picking Numbers

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September 15 2022

Electronics Shop

[HackerRank] Drawing Book (Java)

September 14 2022

Drawing Book

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September 13 2022

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[HackerRank] Day of the Programmer (Java)

September 12 2022

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September 11 2022

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September 10 2022

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September 09 2022

Simple Array Sum

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September 08 2022

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[HackerRank] Subarray Division (Java)

September 07 2022

Subarray Division

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September 06 2022

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September 05 2022

Bill Division

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September 04 2022

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September 03 2022

Divisible Sum Pairs

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September 02 2022

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August 28 2022

Grading Students

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August 27 2022

Birthday Cake Candles

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August 26 2022

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August 25 2022

Diagonal Difference

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August 24 2022

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[LeetCode] 1773. Count Items Matching a Rule (Java)

August 23 2022

Count Items Matching a Rule

[LeetCode] 1859. Sorting the Sentence (Java)

August 22 2022

Sorting the Sentence

[LeetCode] 1221. Split a String in Balanced Strings (Java)

August 21 2022

Split a String in Balanced Strings

[LeetCode] 1528. Shuffle String (Java)

August 20 2022

Shuffle String

[LeetCode] 1342. Number of Steps to Reduce a Number to Zero (Java)

August 19 2022

Number of Steps to Reduce a Number to Zero

[LeetCode] 1720. Decode XORed Array (Java)

August 18 2022

Decode XORed Array

[LeetCode] 1678. Goal Parser Interpretation (Java)

August 17 2022

Goal Parser Interpretation

[LeetCode] 1365. How Many Numbers Are Smaller Than the Current Number (Java)

August 16 2022

How Many Numbers Are Smaller Than the Current Number

[LeetCode] 1281. Subtract the Product and Sum of Digits of an Integer (Java)

August 15 2022

Subtract the Product and Sum of Digits of an Integer

[LeetCode] 1431. Kids With the Greatest Number of Candies (Java)

August 14 2022

Kids With the Greatest Number of Candies

[LeetCode] 1603. Design Parking System (Java)

August 13 2022

Design Parking System

[LeetCode] 771. Jewels and Stones (Java)

August 12 2022

Jewels and Stones

[LeetCode] 1512. Number of Good Pairs (Java)

August 11 2022

Number of Good Pairs

[LeetCode] 2160. Minimum Sum of Four Digit Number After Splitting Digits (Java)

August 10 2022

Minimum Sum of Four Digit Number After Splitting Digits

[LeetCode] 2114. Maximum Number of Words Found in Sentences (Java)

August 09 2022

Maximum Number of Words Found in Sentences

[LeetCode] 1470. Shuffle the Array (Java)

August 08 2022

Shuffle the Array

[LeetCode] 1672. Richest Customer Wealth (Java)

August 07 2022

Richest Customer Wealth

[LeetCode] 2011. Final Value of Variable After Performing Operations (Java)

August 06 2022

Final Value of Variable After Performing Operations

[LeetCode] 1108. Defanging an IP Address (Java)

August 05 2022

Defanging an IP Address

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최대 길이 연속부분수열

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August 02 2022

연속 부분수열

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August 01 2022

최대 매출

[Inflearn] Java 알고리즘 : 2. 공통원소 구하기

July 31 2022

공통원소 구하기

[Inflearn] Java 알고리즘 : 1. 두 배열 합치기

July 30 2022

두 배열 합치기

[Inflearn] Java 알고리즘 : 12. 멘토링

July 29 2022

멘토링

[Inflearn] Java 알고리즘 : 11. 임시반장 정하기

July 28 2022

임시반장 정하기

[Inflearn] Java 알고리즘 : 10. 봉우리

July 27 2022

봉우리

[Inflearn] Java 알고리즘 : 9. 격자판 최대합

July 26 2022

격자판 최대합

[Inflearn] Java 알고리즘 : 8. 등수구하기

July 25 2022

틍수구하기

[Inflearn] Java 알고리즘 : 7. 점수계산

July 24 2022

점수계산

[Inflearn] Java 알고리즘 : 6. 뒤집은 소수

July 23 2022

뒤집은 소수

[Inflearn] Java 알고리즘 : 5. 소수(에라토스테네스 체)

July 22 2022

소수(에라토스테네스 체)

[Inflearn] Java 알고리즘 : 4. 피보나치 수열

July 21 2022

피보나치 수열

[Inflearn] Java 알고리즘 : 3. 가위 바위 보

July 20 2022

가위 바위 보

[Inflearn] Java 알고리즘 : 2. 보이는 학생

July 19 2022

보이는 학생

[Inflearn] Java 알고리즘 : 1. 큰 수 출력하기

July 18 2022

큰 수 출력하기

[Inflearn] Java 알고리즘 : 12. 암호

July 17 2022

암호

[Inflearn] Java 알고리즘 : 11. 문자열 압축

July 16 2022

문자열 압축

[Inflearn] Java 알고리즘 : 10. 가장 짧은 문자거리

July 15 2022

가장 짧은 문자거리

[Inflearn] Java 알고리즘 : 9. 숫자만 추출

July 14 2022

숫자만 추출

[Inflearn] Java 알고리즘 : 8. 유효한 팰린드롬

July 13 2022

유효한 팰린드롬

[Inflearn] Java 알고리즘 : 7. 회문 문자열

July 12 2022

회문 문자열

[Inflearn] Java 알고리즘 : 6. 중복문자제거

July 11 2022

중복문자제거

[Inflearn] Java 알고리즘 : 5. 특정 문자 뒤집기

July 10 2022

특정 문자 뒤집기

[Inflearn] Java 알고리즘 : 4. 단어 뒤집기

July 09 2022

단어 뒤집기

[Inflearn] Java 알고리즘 : 3. 문장 속 단어

July 08 2022

문장 속 단어

[Inflearn] Java 알고리즘 : 2. 대소문자 변환

July 07 2022

대소문자 변환

[LeetCode] 1480. Running Sum of 1d Array (Java)

July 06 2022

Running Sum of 1d Array

[HackerRank] Java Singleton Pattern?

July 04 2022

Java Singleton Pattern?

[HackerRank] Can You Access?

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Can You Access?

[HackerRank] Java Priority Queue

July 03 2022

Java Priority Queue

[HackerRank] Java Dequeue

July 02 2022

Java Dequeue

[HackerRank] Java 1D Array (Part 2)

July 01 2022

Java 1D Array (Part 2)

[HackerRank] Tag Content Extractor

June 30 2022

Tag Content Extractor

[HackerRank] Valid Username Regular Expression

June 29 2022

Valid Username Regular Expression

[HackerRank] Java Regex 2 - Duplicate Words

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Java Regex 2 - Duplicate Words

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Java Factory Pattern

[HackerRank] Prime Checker

June 26 2022

Prime Checker

[HackerRank] Java Lambda Expressions

June 25 2022

Java Lambda Expressions

[HackerRank] Java Instanceof keyword

June 24 2022

Java Instanceof keyword

[HackerRank] Java BigDecimal

June 23 2022

Java BigDecimal

[HackerRank] Java BitSet

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Java BitSet

[HackerRank] Java Sort

June 21 2022

Java Sort

[HackerRank] Java HashSet

June 20 2022

Java HashSet

[HackerRank] Java Map

June 19 2022

Java Map

[HackerRank] Java List

June 18 2022

Java List

[HackerRank] Java Exception Handling (Try-catch)

June 17 2022

Java Exception Handling (Try-catch)

[HackerRank] Java ArrayList

June 16 2022

Java ArrayList

[HackerRank] Java Reflection - Attributes

June 15 2022

Java Reflection - Attributes

[HackerRank] Java If-Else

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[HackerRank] Java Varargs - Simple Addition

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Java Varargs - Simple Addition

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Java Exception Handling

[HackerRank] Java Subarray

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[HackerRank] Java 2D Array

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[HackerRank] Java BigInteger

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Java Substring Comparisons

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Java Strings Introduction

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May 24 2022

Java Loops I

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May 23 2022

Java Output Formatting

[LeetCode] 1119. Remove Vowels from a String (Java)

May 22 2022

Remove Vowels from a String

[LeetCode] 1920. Build Array from Permutation (Java)

May 21 2022

Build Array from Permutation

[LeetCode] 1929. Concatenation of Array (Java)

May 20 2022

Concatenation of Array

[Programmers] 소수 찾기 (Java)

May 19 2022

소수 찾기

[Programmers] 문자열 내 마음대로 정렬하기 (Java)

May 18 2022

문자열 내 마음대로 정렬하기

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May 17 2022

최대공약수와 최소공배수

[Programmers] 시저 암호

May 16 2022

시저 암호

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May 15 2022

정수 내림차순으로 배치하기

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May 14 2022

이상한 문자 만들기

[Programmers] 행렬의 덧셈 (Java)

May 13 2022

행렬의 덧셈

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문자 찾기

[Programmers] 제일 작은 수 제거하기 (Java)

May 12 2022

제일 작은 수 제거하기

[Programmers] 정수 제곱근 판별 (Java)

May 11 2022

정수 제곱근 판별

[Programmers] 2016년 (Java)

May 10 2022

2016년

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May 09 2022

콜라츠 추측

[Programmers] 문자열 내림차순으로 배치하기 (Java)

May 08 2022

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[Programmers] 하샤드 수 (Java)

May 07 2022

하샤드 수

[Programmers] 같은 숫자는 싫어 (Java)

May 06 2022

같은 숫자는 싫어

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May 05 2022

나누어 떨어지는 숫자 배열

[Programmers] 문자열 내 p와 y의 개수 (Java)

May 04 2022

문자열 내 p와 y의 개수

[Programmers] 문자열 다루기 기본 (Java)

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문자열 다루기 기본

[Programmers] 서울에서 김서방 찾기

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서울에서 김서방 찾기

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May 01 2022

두 정수 사이의 합

[Programmers] 가운데 글자 가져오기 (Java)

April 30 2022

가운데 글자 가져오기

[Programmers] 문자열을 정수로 바꾸기 (Java)

April 29 2022

문자열을 정수로 바꾸기

[Programmers] 수박수박수박수박수박수? (Java)

April 28 2022

수박수박수박수박수박수?

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April 27 2022

약수의 합

[Programmers] 자연수 뒤집어 배열로 만들기 (Java)

April 26 2022

자연수 뒤집어 배열로 만들기

[Programmers] 핸드폰 번호 가리기 (Java)

April 25 2022

핸드폰 번호 가리기

[Programmers] 자릿수 더하기 (Java)

April 24 2022

자릿수 더하기

[Programmers] x만큼 간격이 있는 n개의 숫자 (Java)

April 23 2022

x만큼 간격이 있는 n개의 숫자

[Programmers] 평균 구하기 (Java)

April 22 2022

평균 구하기

[Programmers] 짝수와 홀수 (Java)

April 21 2022

짝수와 홀수

[Programmers] 직사각형 별찍기 (Java)

April 20 2022

직사각형 별찍기

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October 19 2023

algorithms, python, stack, queue

[Programmers] 기능개발 (Python)

October 18 2023

algorithms, python, stack, queue

[Programmers] 올바른 괄호 (Python)

October 17 2023

algorithms, python, stack, queue

[Programmers] 같은 숫자는 싫어 (Python)

October 16 2023

algorithms, python, stack, queue

[Programmers] 베스트앨범 (Python)

October 13 2023

algorithms, python, hash-table

[Programmers] 의상 (Python)

October 12 2023

algorithms, python, hash-table

[Programmers] 전화번호 목록 (Python)

October 11 2023

algorithms, python, hash-table

[Programmers] 완주하지 못한 선수 (Python)

October 10 2023

algorithms, python, hash-table

[Programmers] 폰켓몬 (Python)

October 09 2023

algorithms, python, hash-table

[BaekJoon] 1992번: 쿼드트리 (Python)

September 22 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1780번: 종이의 개수 (Python)

September 21 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1074번: Z (Python)

September 20 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2630번: 색종이 만들기 (Python)

September 19 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2447번: 별 찍기 - 10 (Python)

September 18 2023

algorithms, python, divide-and-conquer

[BaekJoon] 1890번: 점프 (Python)

September 15 2023

algorithms, python, dp

[BaekJoon] 2293번: 동전 1 (Python)

September 14 2023

algorithms, python, dp

[BaekJoon] 2688번: 줄어들지 않아 (Python)

September 13 2023

algorithms, python, dp

[BaekJoon] 10844번: 쉬운 계단 수 (Python)

September 12 2023

algorithms, python, dp

[BaekJoon] 2156번: 포도주 시식 (Python)

September 11 2023

algorithms, python, dp

[LeetCode] 509. Fibonacci Number (Python)

September 09 2023

python, algorithms, math, dp, recursion, memoization

[BaekJoon] 16953번: A -> B (Python)

September 08 2023

algorithms, python, greedy, bfs

[BaekJoon] 1715번: 카드 정렬하기 (Python)

September 07 2023

algorithms, python, greedy, priority-queue

[BaekJoon] 13305번: 주유소 (Python)

September 06 2023

algorithms, python, greedy

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

September 05 2023

algorithms, python, math, greedy, string, parsing

[BaekJoon] 1931번: 회의실 배정 (Python)

September 04 2023

algorithms, python, greedy, sorting

[LeetCode] 455. Assign Cookies (Python)

September 03 2023

python, algorithms, array, two-pointer, greddy, sorting

[LeetCode] 406. Queue Reconstruction by Height (Python)

September 03 2023

python, algorithms, array, greedy, sorting

[LeetCode] 134. Gas Station (Python)

September 03 2023

python, algorithms, array, greedy

[LeetCode] 122. Best Time to Buy and Sell Stock II (Python)

September 03 2023

python, algorithms, array, dp, greedy

[BaekJoon] 21921번: 블로그 (Python)

September 01 2023

algorithms, python, sliding-window

[BaekJoon] 15961번: 회전 초밥 (Python)

August 31 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 2559번: 수열 (Python)

August 30 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 12891번: DNA 비밀번호 (Python)

August 29 2023

algorithms, python, string, sliding-window

[BaekJoon] 2096번: 내려가기 (Python)

August 28 2023

algorithms, python, dp, sliding-window

[LeetCode] 76. Minimum Window Substring (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 424. Longest Repeating Character Replacement (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[BaekJoon] 11811번: 데스스타 (Python)

August 25 2023

algorithms, python, mask, bit-mask

[BaekJoon] 15787번: 기차가 어둠을 헤치고 은하수를 (Python)

August 24 2023

algorithms, python, implementation, bit-mask

[BaekJoon] 17419번: 비트가 넘쳐흘러 (Python)

August 23 2023

algorithms, python, math, string, bit-mask

[BaekJoon] 2961번: 도영이가 만든 맛있는 음식 (Python)

August 22 2023

algorithms, python, brute-force, bit-mask, back-tracking

[BaekJoon] 1740번: 거듭제곱 (Python)

August 21 2023

algorithms, python, bit-mask

[LeetCode] 461. Hamming Distance (Python)

August 19 2023

python, algorithms, bit-manipulation

[LeetCode] 191. Number of 1 Bits (Python)

August 19 2023

python, algorithms, divide-and-conquer, bit-manipulation

[LeetCode] 371. Sum of Two Integers (Python)

August 19 2023

python, algorithms, math, bit-manipulation

[LeetCode] 136. Single Number (Python)

August 19 2023

python, algorithms, array, bit-manipulation

[BaekJoon] 7795번: 먹을 것인가 먹힐 것인가 (Python)

August 18 2023

algorithms, python, binary-search, two-pointer

[BaekJoon] 2343번: 기타 레슨 (Python)

August 17 2023

algorithms, python, binary-search

[BaekJoon] 2512번: 예산 (Python)

August 16 2023

algorithms, python, binary-search

[BaekJoon] 2110번: 공유기 설치 (Python)

August 15 2023

algorithms, python, binary-search

[BaekJoon] 2805번: 나무 자르기 (Python)

August 14 2023

algorithms, python, binary-search

[LeetCode] 704. Binary Search (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[LeetCode] 33. Search in Rotated Sorted Array (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 240. Search a 2D Matrix II (Python)

August 12 2023

python, algorithms, array, binary-search, divide-and-conquer, matrix

[LeetCode] 167. Two Sum II - Input Array Is Sorted (Python)

August 12 2023

python, algorithms, array, two-pointer, binary-search

[BaekJoon] 2437번: 저울 (Python)

August 11 2023

algorithms, python, greedy, sorting

[BaekJoon] 1449번: 수리공 항승 (Python)

August 10 2023

algorithms, python, greedy, sorting

[BaekJoon] 1744번: 수 묶기 (Python)

August 09 2023

algorithms, python, greedy, sorting

[BaekJoon] 2075번: N번째 큰 수 (Python)

August 08 2023

algorithms, python, data-structure, sorting, priority-queue

[BaekJoon] 1202번: 보석 도둑 (Python)

August 07 2023

algorithms, python, data-structure, greedy, sorting, priority-queue

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 75. Sort Colors (Python)

August 05 2023

python, algorithms, array, two-pointers, sorting, dnf

[LeetCode] 242. Valid Anagram (Python)

August 05 2023

python, algorithms, hash-table, string, sorting

[LeetCode] 179. Largest Number (Python)

August 05 2023

python, algorithms, array, string, greedy, sorting

[BaekJoon] 2170번: 선 긋기 (Python)

August 04 2023

algorithms, python, sorting, sweeping

[BaekJoon] 2470번: 두 용액 (Python)

August 03 2023

algorithms, python, sorting, binary-search, two-pointer

[BaekJoon] 11497번: 통나무 건너뛰기 (Python)

August 02 2023

algorithms, python, greedy, sorting

[BaekJoon] 1302번: 베스트셀러 (Python)

August 01 2023

algorithms, python, string, sorting, hash-table

[BaekJoon] 11399번: ATM (Python)

July 31 2023

algorithms, python, greedy, sorting

[LeetCode] 56. Merge Intervals (Python)

July 29 2023

python, algorithms, array, sorting

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 147. Insertion Sort List (Python)

July 29 2023

python, algorithms, linked-list, sorting

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[BaekJoon] 14725번: 개미굴 (Python)

July 27 2023

algorithms, python, data-structure, string, tree, trie

[BaekJoon] 11000번: 강의실 배정 (Python)

July 26 2023

algorithms, python, data-structure, greedy, priority-queue, sorting

[BaekJoon] 1715번: 카드 정렬하기 (Python)

July 25 2023

algorithms, python, data-structure, greedy, priority-queue

[BaekJoon] 1927번, 11279번: 최소 힙, 최대 힙 (Python)

July 24 2023

algorithms, python, data-structure, priority-queue

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

[LeetCode] 208. Implement Trie (Prefix Tree) (Python)

July 22 2023

python, algorithms, hash-table, string, design, trie

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[BaekJoon] 3584번: 가장 가까운 공통 조상 (Python)

July 21 2023

algorithms, python, graph, tree, lca, dfs

[BaekJoon] 11437번: LCA (Python)

July 20 2023

algorithms, python, graph, tree, lca

[BaekJoon] 2263번: 트리의 순회 (Python)

July 19 2023

algorithms, python, tree, recursion, divide-and-conquer

[BaekJoon] 5052번: 전화번호 목록 (Python)

July 18 2023

algorithms, python, data-structure, string, sorting, tree

[BaekJoon] 9372번: 상근이의 여행 (Python)

July 17 2023

graph

[LeetCode] 938. Range Sum of BST (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 783. Minimum Distance Between BST Nodes (Python)

July 16 2023

tree, dfs, bfs, binary-search-tree, binary-tree

[LeetCode] 1038. Binary Search Tree to Greater Sum Tree (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 310. Minimum Height Trees (Python)

July 15 2023

bfs, dfs, graph

[LeetCode] 110. Balanced Binary Tree (Python)

July 15 2023

tree, dfs, binary-tree

[LeetCode] 108. Convert Sorted Array to Binary Search Tree (Python)

July 15 2023

tree, binary-search-tree, binary-tree

[LeetCode] 617. Merge Two Binary Trees (Python)

July 14 2023

tree, dfs, bfs, binary-tree

[BaekJoon] 1068번: 트리 (Python)

July 14 2023

tree, dfs

[BaekJoon] 5639번: 이진 검색 트리 (Python)

July 13 2023

tree, recursion

[BaekJoon] 1967번: 트리의 지름 (Python)

July 12 2023

tree, bfs, dfs

[BaekJoon] 11725번: 트리의 부모 찾기 (Python)

July 11 2023

tree, bfs, dfs

[BaekJoon] 1991번: 트리 순회 (Python)

July 10 2023

tree, recursion

[LeetCode] 226. Invert Binary Tree (Python)

July 05 2023

graph, dfs, bfs, binary-tree

[LeetCode] 687. Longest Univalue Path (Python)

July 04 2023

graph, dfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

July 03 2023

graph, dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

July 01 2023

graph, bfs, binary-tree

[BaekJoon] 7562번: 나이트의 이동 (Python)

June 30 2023

graph, bfs

[BaekJoon] 2167번: 2차원 배열의 합 (Python)

June 30 2023

implementation, dp

[BaekJoon] 2108번: 통계학 (Python)

June 30 2023

math, implementation, sorting

[BaekJoon] 17413번: 단어 뒤집기 2 (Python)

June 30 2023

implementation, stack, string

[BaekJoon] 1292번: 쉽게 푸는 문제 (Python)

June 30 2023

implementation, math

[BaekJoon] 1697번: 숨바꼭질 (Python)

June 29 2023

graph, bfs

[BaekJoon] 2178번: 미로 탐색 (Python)

June 28 2023

graph, bfs

[BaekJoon] 2468번: 안전 영역 (Python)

June 27 2023

graph, dfs, bfs, brute-force

[BaekJoon] 4963번: 섬의 개수 (Python)

June 26 2023

graph, dfs, bfs

[LeetCode] 78. Subsets (Python)

June 24 2023

array, back-tracking, dfs

[LeetCode] 332. Reconstruct Itinerary (Python)

June 24 2023

graph, dfs

[LeetCode] 207. Course Schedule (Python)

June 24 2023

graph, bfs, dfs

[BaekJoon] 11724번: 연결 요소의 개수 (Python)

June 23 2023

graph, dfs, bfs

[BaekJoon] 1012번: 유기농 배추 (Python)

June 22 2023

graph, dfs, bfs

[BaekJoon] 2667번: 단지번호 붙이기 (Python)

June 21 2023

graph, dfs, bfs

[BaekJoon] 2606번: 바이러스 (Python)

June 20 2023

graph, dfs, bfs

[BaekJoon] 1260번: DFS와 BFS (Python)

June 19 2023

graph, dfs, bfs

[LeetCode] 77. Combinations (Python)

June 17 2023

back-tracking, combination

[LeetCode] 46. Permutations (Python)

June 17 2023

array, back-tracking, permutation

[LeetCode] 39. Combination Sum (Python)

June 17 2023

array, back-tracking

[LeetCode] 200. Number of Islands (Python)

June 17 2023

array, dfs, bfs, union-find

[LeetCode] 17. Letter Combinations of a Phone Number (Python)

June 17 2023

hash-table, string, back-tracking

[BaekJoon] 9375번: 패션왕 신해빈 (Python)

June 16 2023

data-structure, math, hash-table, combinatorics

[BaekJoon] 1021번: 회전하는 큐 (Python)

June 15 2023

data-structure, deque

[BaekJoon] 1406번: 에디터 (Python)

June 14 2023

data-structure, stack, linked-list

[BaekJoon] 11286번: 절댓값 힙 (Python)

June 13 2023

data-structure, priority-queue

[BaekJoon] 10799번: 쇠막대기 (Python)

June 12 2023

data-structure, stack

[LeetCode] 771. Jewels and Stones (Python)

June 10 2023

hash-table, string

[LeetCode] 706. Design HashMap (Python)

June 10 2023

array, hash-table, linked-list, design, hash-function

[LeetCode] 641. Design Circular Deque (Python)

June 10 2023

array, linked-list, design, queue

[LeetCode] 347. Top K Frequent Elements (Python)

June 10 2023

array, hash-table, sorting, counter

[LeetCode] 3. Longest Substring Without Repeating Characters (Python)

June 10 2023

hash-table, string, sliding-window

[LeetCode] 23. Merge k Sorted Lists (Python)

June 10 2023

linked-list, divide-and-conquer, priority-queue, merge-sort

[BaekJoon] 9093번: 단어 뒤집기 (Python)

June 09 2023

implementation, string

[BaekJoon] 3273번: 두 수의 합 (Python)

June 09 2023

sorting, two-pointer

[BaekJoon] 1927번: 최소 힙 (Python)

June 09 2023

data-structure, priority-queue

[BaekJoon] 18258번: 큐2 (Python)

June 09 2023

data-structure, queue

[BaekJoon] 17478번: 재귀함수가 뭔가요? (Python)

June 09 2023

implementation, recursion

[BaekJoon] 1620번: 나는야 포켓몬 마스터 이다솜 (Python)

June 09 2023

data-structure, hash-table

[BaekJoon] 14425번: 문자열 집합 (Python)

June 09 2023

data-structure, string, hash-table

[BaekJoon] 11656번: 접미사 배열 (Python)

June 09 2023

sorting, string

[BaekJoon] 11279번: 최대 힙 (Python)

June 09 2023

data-structure, priority-queue

[BaekJoon] 1100번: 하얀 칸 (Python)

June 09 2023

implementation, string

[BaekJoon] 10866번: 덱 (Python)

June 09 2023

implementation, data-structure, deque

[BaekJoon] 10798번: 세로읽기 (Python)

June 09 2023

implementation, string

[BaekJoon] 4949번: 균형잡힌 세상 (Python)

June 08 2023

data-structure, stack, string

[BaekJoon] 1874번: 스택 수열 (Python)

June 07 2023

data-structure, stack

[BaekJoon] 2164번: 카드2 (Python)

June 05 2023

data-structure, queue

[BaekJoon] 10845번: 큐 (Python)

June 04 2023

data-structure, queue

[BaekJoon] 10828번: 스택 (Python)

June 04 2023

implementation, data-structure, stack

[LeetCode] 225. Implement Stack using Queues (Python)

June 03 2023

stack, design, queue

[LeetCode] 20. Valid Parentheses (Python)

June 03 2023

string, stack

[BaekJoon] 1946번: 신입 사원 (Python)

June 02 2023

greedy, sorting

[BaekJoon] 10825번: 국영수 (Python)

June 01 2023

sorting

[BaekJoon] 10610번: 30 (Python)

May 31 2023

math, string, greedy, sorting, number-theory

[BaekJoon] 10816번: 숫자 카드 2 (Python)

May 30 2023

data-structure, sorting, binary-search, hash-table

[BaekJoon] 2309번: 일곱 난쟁이 (Python)

May 29 2023

brute-force, sorting

[BaekJoon] 11651번: 좌표 정렬하기 2 (Python)

May 28 2023

sorting

[BaekJoon] 1764번: 듣보잡 (Python)

May 26 2023

data-structure, string, sorting, hash-table

[BaekJoon] 1026번: 보물 (Python)

May 25 2023

math, greedy, sorting

[BaekJoon] 10815번: 숫자 카드 (Python)

May 24 2023

data-structure, sorting, binary-search

[BaekJoon] 1931번: 회의실 배정 (Python)

May 23 2023

greedy, sorting

[BaekJoon] 1920번: 수 찾기 (Python)

May 22 2023

data-structure, sorting, binary-search

[BaekJoon] 11650번: 좌표 정렬하기 (Python)

May 22 2023

sorting

[BaekJoon] 10814번: 나이순 정렬 (Python)

May 22 2023

sorting

[파이썬 알고리즘 인터뷰] 알고리즘 문자열 풀이 기법 정리

May 21 2023

6장. 문자열 조작, LeetCode 문제 기반

[LeetCode] 561. Array Partition (Python)

May 20 2023

array, greedy, sorting, counting-sort

[LeetCode] 42. Trapping Rain Water (Python)

May 20 2023

array, two-pointers, dp, stack

[LeetCode] 238. Product of Array Except Self (Python)

May 20 2023

array, prefix-sum

[LeetCode] 15. 3Sum (Python)

May 20 2023

array, two-pointers, sorting

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

May 19 2023

math, string, greedy

[BaekJoon] 1181번: 단어 정렬 (Python)

May 18 2023

string, sorting

[BaekJoon] 9012번: 괄호 (Python)

May 17 2023

data-structure, string, stack

[BaekJoon] 2566번: 최댓값 (Python)

May 16 2023

implementation

[BaekJoon] 1032번: 명령 프롬프트 (Python)

May 15 2023

implementation, string

[BaekJoon] 2587번: 대표값2 (Python)

May 14 2023

implementation, math, sorting

[LeetCode] 937. Reorder Data in Log Files (Python)

May 13 2023

array, string, sorting

[LeetCode] 819. Most Common Word (Python)

May 13 2023

hash-table, string, counting

[LeetCode] 5. Longest Palindromic Substring (Python)

May 13 2023

string, dp, two-pointer

[LeetCode] 49. Group Anagrams (Python)

May 13 2023

array, hash-table, string, sorting

[BaekJoon] 10162번: 전자레인지 (Python)

May 12 2023

implementation, math, greedy

[BaekJoon] 2914번: 저작권 (Python)

May 11 2023

implementation, math

[BaekJoon] 2455번: 지능형 기차 (Python)

May 10 2023

implementation, math

[BaekJoon] 11723번: 집합 (Python)

May 09 2023

implementation, bitmask

[BaekJoon] 10988번: 팰린드롬인지 확인하기 (Python)

May 08 2023

implementation, string

[BaekJoon] 3052번: 나머지 (Python)

May 06 2023

math

[BaekJoon] 1546번: 평균 (Python)

May 06 2023

math

[LeetCode] 344. Reverse String (Python)

April 29 2023

two-pointers, string

[LeetCode] 125. Valid Palindrome (Python)

April 29 2023

two-pointers, string

[BaekJoon] 2490번: 윷놀이 (Python)

April 28 2023

implementation

[BaekJoon] 2738번: 행렬 덧셈 (Python)

April 27 2023

implementation, math

[BaekJoon] 1475번: 방 번호 (Python)

April 27 2023

implementation

[BaekJoon] 10808번: 알파벳 개수 (Python)

April 26 2023

implementation, string

[BaekJoon] 2563번: 색종이 (Python)

April 25 2023

implementation

[BaekJoon] 1259번: 팰린드롬수 (Python)

April 24 2023

implementation, string

[BaekJoon] 2747번: 피보나치 수 (Python)

April 21 2023

implementation, math

[BaekJoon] 1966번: 프린터 큐 (Python)

April 20 2023

implementation, data-structure, simulation, queue

[BaekJoon] 11050번: 이항 계수 1 (Python)

April 19 2023

implementation, math, combinatorics

[BaekJoon] 1158번: 요세푸스 문제 (Python)

April 18 2023

implementation, data-structure, queue

[BaekJoon] 10773번: 제로 (Python)

April 17 2023

implementation, data-structure, stack

[Programmers] 괄호 변환 (Python)

April 15 2023

2020 KAKAO BLIND RECRUITMENT

[Programmers] [3차] 방금그곡 (Python)

April 15 2023

2018 KAKAO BLIND RECRUITMENT

[BaekJoon] 25304번: 영수증 (Python)

April 14 2023

implementation, math

[BaekJoon] 1924번: 2007년 (Python)

April 13 2023

implementation, math

[BaekJoon] 7568번: 덩치 (Python)

April 12 2023

implementation, brute-force

[BaekJoon] 3003번: 킹, 퀸, 룩, 비숍, 나이트, 폰 (Python)

April 11 2023

implementation, math

[BaekJoon] 2920번: 음계 (Python)

April 10 2023

implementation

[알고리즘 구현] 순열과 조합 구현 (Python)

April 09 2023

Permutation, Combination, 재귀, 백트래킹, 그리디

[Programmers] 두 큐 합 같게 만들기 (Python)

April 08 2023

2022 KAKAO BLIND RECRUITMENT

[Programmers] 메뉴 리뉴얼 (Python)

April 08 2023

2021 KAKAO BLIND RECRUITMENT

[Programmers] [1차] 프렌즈4블록 (Python)

April 08 2023

2018 KAKAO BLIND RECRUITMENT

[BaekJoon] 2775번: 부녀회장이 될테야 (Python)

April 07 2023

implementation, math, dp

[BaekJoon] 1193번: 분수찾기 (Python)

April 06 2023

implementation, math

[BaekJoon] 10250번: ACM 호텔 (Python)

April 05 2023

implementation, math

[BaekJoon] 2941번: 크로아티아 알파벳 (Python)

April 04 2023

implementation, string

[BaekJoon] 5622번: 다이얼 (Python)

April 03 2023

implementation

[BaekJoon] 10817번: 세 수 (Python)

April 03 2023

implementation, sorting

[Programmers] [3차] 파일명 정렬 (Python)

April 01 2023

2018 KAKAO BLIND RECRUITMENT

[Programmers] 주차 요금 계산 (Python)

April 01 2023

2022 KAKAO BLIND RECRUITMENT

[Programmers] 오픈채팅방 (Python)

April 01 2023

2019 KAKAO BLIND RECRUITMENT

[Programmers] [3차] n진수 게임 (Python)

March 31 2023

2018 KAKAO BLIND RECRUITMENT

[BaekJoon] 1316번: 그룹 단어 체커 (Python)

March 31 2023

implementation, string

[BaekJoon] 4673번: 셀프 넘버 (Python)

March 30 2023

implementation, brute-force, math

[BaekJoon] 2675번: 문자열 반복 (Python)

March 29 2023

implementation, string

[BaekJoon] 1157번: 단어 공부 (Python)

March 29 2023

implementation, string

[BaekJoon] 2480번: 주사위 세개 (Python)

March 28 2023

implementation, math

[BaekJoon] 1152번: 단어의 개수 (Python)

March 28 2023

implementation, string

[BaekJoon] 10809번: 알파벳 찾기 (Python)

March 28 2023

implementation, string

[BaekJoon] 8958번: OX퀴즈 (Python)

March 27 2023

implementation, string

[BaekJoon] 2562번: 최댓값 (Python)

March 27 2023

implementation

[Programmers] [3차] 압축 (Python)

March 25 2023

2018 KAKAO BLIND RECRUITMENT

[LeetCode] 1. Two Sum (Python)

March 24 2023

python, array, hash-table

[LeetCode] 141. Linked List Cycle (Python)

March 23 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 234. Palindrome Linked List (Python)

March 22 2023

python, linked-list, two-pointers, stack, recursion

[LeetCode] 70. Climbing Stairs (Python)

March 21 2023

python, math, dp, memorization

[LeetCode] 160. Intersection of Two Linked Lists (Python)

March 20 2023

python, hash-table, linked-list, two-pointers

[Programmers] 튜플 (Python)

March 18 2023

2019 카카오 개발자 겨울 인턴십

[Programmers] [1차] 뉴스 클러스터링 (Python)

March 18 2023

2018 KAKAO BLIND RECRUITMENT

[Programmers] k진수에서 소수 개수 구하기 (Python)

March 18 2023

2022 KAKAO BLIND RECRUITMENT

[LeetCode] 101. Symmetric Tree (Python)

March 17 2023

python, tree, dfs, bfs, binary-tree

[LeetCode] 121. Best Time to Buy and Sell Stock (Python)

March 16 2023

python, dp

[LeetCode] 543. Diameter of Binary Tree (Python)

March 15 2023

python, tree, dfs, binary-tree

[LeetCode] 13. Roman to Integer (Python)

March 14 2023

python, hash-table, math, string

[LeetCode] 283. Move Zeroes (Python)

March 13 2023

python, array, two-pointers

[LeetCode] 1313. Decompress Run-Length Encoded List (Python)

March 12 2023

python, algorithms, array

[Programmers] [1차] 캐시 (Python)

March 11 2023

2018 KAKAO BLIND RECRUITMENT

[LeetCode] 21. Merge Two Sorted Lists (Python)

March 10 2023

python, algorithms, linked-list, recursion

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

[LeetCode] 118. Pascal’s Triangle (Python)

March 08 2023

python, algorithms, array, dp

[LeetCode] 136. Single Number (Python)

March 07 2023

python, algorithms, array, bit-manipulation

[LeetCode] 206. Reverse Linked List (Python)

March 06 2023

python, algorithms, linked-list, recursion

[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Python)

March 05 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 2574. Left and Right Sum Differences (Python)

March 04 2023

python, algorithms, array, prefix-sum

[LeetCode] 94. Binary Tree Inorder Traversal (Python)

March 03 2023

python, algorithms, stack, tree ,dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

March 02 2023

python, algorithms, tree, dfs, bfs, binary-tree

[이코테] 코딩 테스트를 위한 파이썬 문법

February 25 2023

파이썬 재밌다

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codesquad

[TIL] 코드스쿼드 수료일

November 03 2023

코드스쿼드 196일차로 마스터즈 마무리

[TIL] 코드스쿼드 팀 프로젝트 85일차

November 02 2023

코드스쿼드 195일차

[TIL] 코드스쿼드 팀 프로젝트 84일차

November 01 2023

코드스쿼드 194일차

[TIL] 코드스쿼드 팀 프로젝트 83일차

October 31 2023

코드스쿼드 193일차

[TIL] 코드스쿼드 팀 프로젝트 82일차

October 30 2023

코드스쿼드 192일차

[TIL] 코드스쿼드 팀 프로젝트 81일차

October 27 2023

코드스쿼드 191일차

[TIL] 코드스쿼드 팀 프로젝트 80일차

October 26 2023

코드스쿼드 190일차

[TIL] 코드스쿼드 팀 프로젝트 79일차

October 25 2023

코드스쿼드 189일차

[TIL] 코드스쿼드 팀 프로젝트 78일차

October 24 2023

코드스쿼드 188일차

[TIL] 코드스쿼드 팀 프로젝트 77일차

October 23 2023

코드스쿼드 187일차

[TIL] 코드스쿼드 팀 프로젝트 76일차

October 20 2023

코드스쿼드 186일차

[TIL] 코드스쿼드 팀 프로젝트 75일차

October 19 2023

코드스쿼드 185일차

[TIL] 코드스쿼드 팀 프로젝트 74일차

October 18 2023

코드스쿼드 184일차

[TIL] 코드스쿼드 팀 프로젝트 73일차

October 17 2023

코드스쿼드 183일차

[TIL] 코드스쿼드 팀 프로젝트 72일차

October 16 2023

코드스쿼드 182일차

[TIL] 코드스쿼드 팀 프로젝트 71일차

October 13 2023

코드스쿼드 181일차

[TIL] 코드스쿼드 팀 프로젝트 70일차

October 12 2023

코드스쿼드 180일차

[TIL] 코드스쿼드 팀 프로젝트 69일차

October 11 2023

코드스쿼드 179일차

[TIL] 코드스쿼드 팀 프로젝트 68일차

October 10 2023

코드스쿼드 178일차

[TIL] 코드스쿼드 팀 프로젝트 67일차

October 06 2023

코드스쿼드 177일차

[TIL] 코드스쿼드 팀 프로젝트 66일차

October 05 2023

코드스쿼드 176일차

[TIL] 코드스쿼드 팀 프로젝트 65일차

October 04 2023

코드스쿼드 175일차

[TIL] 코드스쿼드 팀 프로젝트 64일차

September 22 2023

코드스쿼드 174일차

[TIL] 코드스쿼드 팀 프로젝트 63일차

September 21 2023

코드스쿼드 173일차

[TIL] 코드스쿼드 팀 프로젝트 62일차

September 20 2023

코드스쿼드 172일차

[TIL] 코드스쿼드 팀 프로젝트 61일차

September 19 2023

코드스쿼드 171일차

[TIL] 코드스쿼드 팀 프로젝트 60일차

September 18 2023

코드스쿼드 170일차

[TIL] 코드스쿼드 팀 프로젝트 59일차

September 15 2023

코드스쿼드 169일차

[TIL] 코드스쿼드 팀 프로젝트 58일차

September 14 2023

코드스쿼드 168일차

[TIL] 코드스쿼드 팀 프로젝트 57일차

September 13 2023

코드스쿼드 167일차

[TIL] 코드스쿼드 팀 프로젝트 56일차

September 12 2023

코드스쿼드 166일차

[TIL] 코드스쿼드 팀 프로젝트 55일차

September 11 2023

코드스쿼드 165일차

[TIL] 코드스쿼드 팀 프로젝트 54일차

September 07 2023

코드스쿼드 164일차

[TIL] 코드스쿼드 팀 프로젝트 53일차

September 07 2023

코드스쿼드 163일차

[TIL] 코드스쿼드 팀 프로젝트 52일차

September 06 2023

코드스쿼드 162일차

[TIL] 코드스쿼드 팀 프로젝트 51일차

September 05 2023

코드스쿼드 161일차

[TIL] 코드스쿼드 팀 프로젝트 50일차

September 04 2023

코드스쿼드 160일차

[TIL] 코드스쿼드 팀 프로젝트 49일차

September 01 2023

코드스쿼드 159일차

[TIL] 코드스쿼드 팀 프로젝트 48일차

August 31 2023

코드스쿼드 158일차

[TIL] 코드스쿼드 팀 프로젝트 47일차

August 30 2023

코드스쿼드 157일차

[TIL] 코드스쿼드 팀 프로젝트 46일차

August 29 2023

코드스쿼드 156일차

[TIL] 코드스쿼드 팀 프로젝트 45일차

August 28 2023

코드스쿼드 155일차

[TIL] 코드스쿼드 팀 프로젝트 44일차

August 25 2023

코드스쿼드 154일차

[TIL] 코드스쿼드 팀 프로젝트 43일차

August 24 2023

코드스쿼드 153일차

[TIL] 코드스쿼드 팀 프로젝트 42일차

August 23 2023

코드스쿼드 152일차

[TIL] 코드스쿼드 팀 프로젝트 41일차

August 22 2023

코드스쿼드 151일차

[TIL] 코드스쿼드 팀 프로젝트 40일차

August 21 2023

코드스쿼드 150일차

[TIL] 코드스쿼드 팀 프로젝트 39일차

August 18 2023

코드스쿼드 149일차

[TIL] 코드스쿼드 팀 프로젝트 38일차

August 17 2023

코드스쿼드 148일차

[TIL] 코드스쿼드 팀 프로젝트 37일차

August 16 2023

코드스쿼드 147일차

[TIL] 코드스쿼드 팀 프로젝트 36일차

August 14 2023

코드스쿼드 146일차

[TIL] 코드스쿼드 팀 프로젝트 35일차

August 11 2023

코드스쿼드 145일차

[TIL] 코드스쿼드 팀 프로젝트 34일차

August 10 2023

코드스쿼드 144일차

[TIL] 코드스쿼드 팀 프로젝트 33일차

August 09 2023

코드스쿼드 143일차

[TIL] 코드스쿼드 팀 프로젝트 32일차

August 08 2023

코드스쿼드 142일차

[TIL] 코드스쿼드 팀 프로젝트 31일차

August 07 2023

코드스쿼드 141일차

[TIL] 코드스쿼드 팀 프로젝트 30일차

August 04 2023

코드스쿼드 140일차

[TIL] 코드스쿼드 팀 프로젝트 29일차

August 03 2023

코드스쿼드 139일차

[TIL] 코드스쿼드 팀 프로젝트 28일차

August 02 2023

코드스쿼드 138일차

[TIL] 코드스쿼드 팀 프로젝트 27일차

August 01 2023

코드스쿼드 137일차

[TIL] 코드스쿼드 팀 프로젝트 26일차

July 31 2023

코드스쿼드 136일차

[TIL] 코드스쿼드 팀 프로젝트 25일차

July 28 2023

코드스쿼드 135일차

[TIL] 코드스쿼드 팀 프로젝트 24일차

July 27 2023

코드스쿼드 134일차

[TIL] 코드스쿼드 팀 프로젝트 23일차 (roach)

July 26 2023

코드스쿼드 133일차

[TIL] 코드스쿼드 팀 프로젝트 22일차

July 25 2023

코드스쿼드 132일차

[TIL] 코드스쿼드 팀 프로젝트 21일차

July 24 2023

코드스쿼드 131일차

[TIL] 코드스쿼드 팀 프로젝트 20일차

July 21 2023

코드스쿼드 130일차

[TIL] 코드스쿼드 팀 프로젝트 19일차

July 20 2023

코드스쿼드 129일차

[TIL] 코드스쿼드 팀 프로젝트 18일차

July 19 2023

코드스쿼드 128일차

[TIL] 코드스쿼드 팀 프로젝트 17일차

July 18 2023

코드스쿼드 127일차

[TIL] 코드스쿼드 팀 프로젝트 16일차

July 17 2023

코드스쿼드 126일차

[TIL] 코드스쿼드 팀 프로젝트 15일차

July 14 2023

코드스쿼드 125일차

[TIL] 코드스쿼드 팀 프로젝트 14일차

July 13 2023

코드스쿼드 124일차

[TIL] 코드스쿼드 팀 프로젝트 13일차

July 12 2023

코드스쿼드 123일차

[TIL] 코드스쿼드 팀 프로젝트 12일차

July 11 2023

코드스쿼드 122일차

[TIL] 코드스쿼드 팀 프로젝트 11일차

July 10 2023

코드스쿼드 121일차

[TIL] 코드스쿼드 팀 프로젝트 10일차

June 30 2023

코드스쿼드 120일차

[TIL] 코드스쿼드 팀 프로젝트 9일차

June 29 2023

코드스쿼드 119일차

[TIL] 코드스쿼드 팀 프로젝트 8일차

June 28 2023

코드스쿼드 118일차

[TIL] 코드스쿼드 팀 프로젝트 7일차

June 27 2023

코드스쿼드 117일차

[TIL] 코드스쿼드 팀 프로젝트 6일차

June 26 2023

코드스쿼드 116일차

[TIL] 코드스쿼드 팀 프로젝트 5일차

June 23 2023

코드스쿼드 115일차

[TIL] 코드스쿼드 팀 프로젝트 4일차

June 22 2023

코드스쿼드 114일차

[TIL] 코드스쿼드 팀 프로젝트 3일차

June 21 2023

코드스쿼드 113일차

[TIL] 코드스쿼드 팀 프로젝트 2일차

June 20 2023

코드스쿼드 112일차

[TIL] 코드스쿼드 팀 프로젝트 1일차

June 19 2023

코드스쿼드 111일차

[TIL] 코드스쿼드 백엔드 68일차

June 16 2023

코드스쿼드 110일차

[TIL] 코드스쿼드 백엔드 67일차

June 15 2023

코드스쿼드 109일차

[TIL] 코드스쿼드 백엔드 66일차

June 14 2023

코드스쿼드 108일차

[TIL] 코드스쿼드 백엔드 65일차

June 13 2023

코드스쿼드 107일차

[TIL] 코드스쿼드 백엔드 64일차

June 12 2023

코드스쿼드 106일차

[TIL] 코드스쿼드 백엔드 63일차

June 09 2023

코드스쿼드 105일차

[TIL] 코드스쿼드 백엔드 62일차

June 08 2023

코드스쿼드 104일차

[TIL] 코드스쿼드 백엔드 61일차

June 07 2023

코드스쿼드 103일차

[TIL] 코드스쿼드 백엔드 60일차

June 05 2023

코드스쿼드 102일차

[TIL] 코드스쿼드 백엔드 59일차

June 02 2023

코드스쿼드 101일차

[TIL] 코드스쿼드 백엔드 58일차

June 01 2023

코드스쿼드 100일차

[TIL] 코드스쿼드 백엔드 57일차

May 31 2023

코드스쿼드 99일차

[TIL] 코드스쿼드 백엔드 56일차

May 30 2023

코드스쿼드 98일차

[TIL] 코드스쿼드 백엔드 55일차

May 29 2023

코드스쿼드 97일차

[TIL] 코드스쿼드 백엔드 54일차

May 25 2023

코드스쿼드 96일차

[TIL] 코드스쿼드 백엔드 53일차

May 24 2023

코드스쿼드 95일차

[TIL] 코드스쿼드 백엔드 52일차

May 23 2023

코드스쿼드 94일차

[TIL] 코드스쿼드 백엔드 51일차

May 22 2023

코드스쿼드 93일차

[TIL] 코드스쿼드 백엔드 50일차

May 19 2023

코드스쿼드 92일차

[TIL] 코드스쿼드 백엔드 49일차

May 18 2023

코드스쿼드 91일차

[TIL] 코드스쿼드 백엔드 48일차

May 17 2023

코드스쿼드 90일차

[TIL] 코드스쿼드 백엔드 47일차

May 16 2023

코드스쿼드 89일차

[TIL] 코드스쿼드 백엔드 46일차

May 15 2023

코드스쿼드 88일차

[TIL] 코드스쿼드 백엔드 45일차

May 12 2023

코드스쿼드 87일차

[TIL] 코드스쿼드 백엔드 44일차

May 11 2023

코드스쿼드 86일차

[TIL] 코드스쿼드 백엔드 43일차

May 10 2023

코드스쿼드 85일차

[TIL] 코드스쿼드 백엔드 42일차

May 09 2023

코드스쿼드 84일차

[TIL] 코드스쿼드 백엔드 41일차

May 08 2023

코드스쿼드 83일차

[TIL] 코드스쿼드 백엔드 40일차

April 28 2023

코드스쿼드 82일차

[TIL] 코드스쿼드 백엔드 39일차

April 27 2023

코드스쿼드 81일차

[TIL] 코드스쿼드 백엔드 38일차

April 26 2023

코드스쿼드 80일차

[TIL] 코드스쿼드 백엔드 37일차

April 25 2023

코드스쿼드 79일차

[TIL] 코드스쿼드 백엔드 36일차

April 24 2023

코드스쿼드 78일차

[Network] URL 문법, 단축 URL 정리

April 21 2023

URL 문법, 단축 URL

[TIL] 코드스쿼드 백엔드 35일차

April 21 2023

코드스쿼드 77일차

[TIL] 코드스쿼드 백엔드 34일차

April 20 2023

코드스쿼드 76일차

[TIL] 코드스쿼드 백엔드 33일차

April 19 2023

코드스쿼드 75일차

[TIL] 코드스쿼드 백엔드 32일차

April 18 2023

코드스쿼드 74일차

[TIL] 코드스쿼드 백엔드 31일차

April 17 2023

코드스쿼드 73일차

[TIL] 코드스쿼드 백엔드 30일차

April 14 2023

코드스쿼드 72일차

[TIL] 코드스쿼드 백엔드 29일차

April 13 2023

코드스쿼드 71일차

[TIL] 코드스쿼드 백엔드 28일차

April 12 2023

코드스쿼드 70일차

[TIL] 코드스쿼드 백엔드 27일차

April 11 2023

코드스쿼드 69일차

[TIL] 코드스쿼드 백엔드 26일차

April 10 2023

코드스쿼드 68일차

[TIL] 코드스쿼드 백엔드 25일차

April 07 2023

코드스쿼드 67일차

[TIL] 코드스쿼드 백엔드 24일차

April 06 2023

코드스쿼드 66일차

[TIL] 코드스쿼드 백엔드 23일차

April 05 2023

코드스쿼드 65일차

[TIL] 코드스쿼드 백엔드 22일차

April 04 2023

코드스쿼드 64일차

[TIL] 코드스쿼드 백엔드 21일차

April 03 2023

코드스쿼드 63일차

[TIL] 코드스쿼드 백엔드 20일차

March 31 2023

코드스쿼드 62일차

[TIL] 코드스쿼드 백엔드 19일차

March 30 2023

코드스쿼드 61일차

[TIL] 코드스쿼드 백엔드 18일차

March 29 2023

코드스쿼드 60일차

[TIL] 코드스쿼드 백엔드 17일차

March 28 2023

코드스쿼드 59일차

[TIL] 코드스쿼드 백엔드 16일차

March 27 2023

코드스쿼드 58일차

[TIL] 코드스쿼드 백엔드 15일차

March 24 2023

코드스쿼드 57일차

[TIL] 코드스쿼드 백엔드 14일차

March 23 2023

코드스쿼드 56일차

[TIL] 코드스쿼드 백엔드 13일차

March 22 2023

코드스쿼드 55일차

[TIL] 코드스쿼드 백엔드 12일차

March 21 2023

코드스쿼드 54일차

[TIL] 코드스쿼드 백엔드 11일차

March 20 2023

코드스쿼드 53일차

[TIL] 코드스쿼드 백엔드 10일차

March 17 2023

코드스쿼드 52일차

[TIL] 코드스쿼드 백엔드 9일차

March 16 2023

코드스쿼드 51일차

[TIL] 코드스쿼드 백엔드 8일차

March 15 2023

코드스쿼드 50일차

[TIL] 코드스쿼드 백엔드 7일차

March 14 2023

코드스쿼드 49일차

[TIL] 코드스쿼드 백엔드 6일차

March 13 2023

코드스쿼드 48일차

[TIL] 코드스쿼드 백엔드 5일차

March 10 2023

코드스쿼드 47일차

[TIL] 코드스쿼드 백엔드 4일차

March 09 2023

코드스쿼드 46일차

[TIL] 코드스쿼드 백엔드 3일차

March 08 2023

코드스쿼드 45일차

[TIL] 코드스쿼드 백엔드 2일차

March 07 2023

코드스쿼드 44일차

[TIL] 코드스쿼드 백엔드 1일차 (백엔드 과정 시작)

March 06 2023

코드스쿼드 43일차

[TIL] 코드스쿼드 CS16 42일차 (CS16 과정 종료)

February 28 2023

코드스쿼드 42일차

[TIL] 코드스쿼드 CS16 41일차

February 27 2023

코드스쿼드 41일차

[TIL] 코드스쿼드 CS16 40일차

February 24 2023

코드스쿼드 40일차

[TIL] 코드스쿼드 CS16 39일차

February 23 2023

코드스쿼드 39일차

[TIL] 코드스쿼드 CS16 38일차

February 22 2023

코드스쿼드 38일차

[Database] M1 docker, MySQL 설치, 인텔리제이 연동

February 21 2023

applie silicon, docker, mysql, vim, locale, connector,

[TIL] 코드스쿼드 CS16 37일차

February 21 2023

코드스쿼드 37일차

[TIL] 코드스쿼드 CS16 36일차

February 20 2023

코드스쿼드 36일차

[TIL] 코드스쿼드 CS16 35일차

February 17 2023

코드스쿼드 35일차

[Network] 김영한 HTTP 총 정리

February 16 2023

IP, TCP, UDP, PORT, DNS, URI, HTTP 메서드, 상태 코드, HTTP 헤더

[TIL] 코드스쿼드 CS16 34일차

February 16 2023

코드스쿼드 34일차

[TIL] 코드스쿼드 CS16 33일차

February 15 2023

코드스쿼드 33일차

[TIL] 코드스쿼드 CS16 32일차

February 14 2023

코드스쿼드 32일차

[TIL] 코드스쿼드 CS16 31일차

February 13 2023

코드스쿼드 31일차

[Java] Java 비동기 프로그래밍 정리 (1)

February 11 2023

CompletableFuture, 콜백, 동기, 비동기

[TIL] 코드스쿼드 CS16 30일차

February 10 2023

코드스쿼드 30일차

[TIL] 코드스쿼드 CS16 29일차

February 09 2023

코드스쿼드 29일차

[TIL] 코드스쿼드 CS16 28일차

February 08 2023

코드스쿼드 28일차

[TIL] 코드스쿼드 CS16 27일차

February 07 2023

코드스쿼드 27일차

[TIL] 코드스쿼드 CS16 26일차

February 06 2023

코드스쿼드 26일차

[TIL] 코드스쿼드 CS16 25일차

February 03 2023

코드스쿼드 25일차

[TIL] 코드스쿼드 CS16 24일차

February 02 2023

코드스쿼드 24일차

[TIL] 코드스쿼드 CS16 23일차

February 01 2023

코드스쿼드 23일차

[Java] Java 함수형 프로그래밍 정리

January 31 2023

람다, 함수형 인터페이스, 클로저, 메서드 참조

[TIL] 코드스쿼드 CS16 22일차

January 31 2023

코드스쿼드 22일차

[TIL] 코드스쿼드 CS16 21일차

January 30 2023

코드스쿼드 21일차

[Network] XML DOM Parser 동작 방식 정리

January 28 2023

tokenizer, lexer, parser, 토큰화, 트리 구축 알고리즘, 브라우저의 오류 처리, pattern, matcher…

[TIL] 코드스쿼드 CS16 20일차

January 27 2023

코드스쿼드 20일차

[TIL] 코드스쿼드 CS16 19일차

January 26 2023

코드스쿼드 19일차

[TIL] 코드스쿼드 CS16 18일차

January 25 2023

코드스쿼드 18일차

[TIL] 코드스쿼드 CS16 17일차

January 24 2023

코드스쿼드 17일차

[TIL] 코드스쿼드 CS16 16일차

January 23 2023

코드스쿼드 16일차

[Java] Java 객체지향, 프로그래밍 구조 정리

January 22 2023

class, object, instance, property, method…

[Java] JVM, Stack, Heap, 가비지 컬렉션 정리

January 22 2023

stack pointer, runtime data area, mark and sweep…

[Operating System] CPU 구조 정리

January 21 2023

dump of memory, fetch, execute, decode…

[TIL] 코드스쿼드 CS16 15일차

January 20 2023

코드스쿼드 15일차

[TIL] 코드스쿼드 CS16 14일차

January 19 2023

코드스쿼드 14일차

[TIL] 코드스쿼드 CS16 13일차

January 18 2023

코드스쿼드 13일차

[TIL] 코드스쿼드 CS16 12일차

January 17 2023

코드스쿼드 12일차

[TIL] 코드스쿼드 CS16 11일차

January 16 2023

코드스쿼드 11일차

[TIL] 코드스쿼드 CS16 10일차

January 13 2023

코드스쿼드 10일차

[TIL] 코드스쿼드 CS16 9일차

January 12 2023

코드스쿼드 9일차

[TIL] 코드스쿼드 CS16 8일차

January 11 2023

코드스쿼드 8일차

[TIL] 코드스쿼드 CS16 7일차

January 10 2023

코드스쿼드 7일차

[TIL] 코드스쿼드 CS16 6일차

January 09 2023

코드스쿼드 6일차

[TIL] 코드스쿼드 CS16 5일차

January 06 2023

코드스쿼드 5일차

[TIL] 코드스쿼드 CS16 4일차

January 05 2023

코드스쿼드 4일차

[TIL] 코드스쿼드 CS16 3일차

January 04 2023

코드스쿼드 3일차

[TIL] 코드스쿼드 CS16 2일차

January 03 2023

코드스쿼드 2일차

[TIL] 코드스쿼드 CS16 1일차

January 02 2023

코드스쿼드 1일차

Back to top ↑

implementation

[BaekJoon] 15787번: 기차가 어둠을 헤치고 은하수를 (Python)

August 24 2023

algorithms, python, implementation, bit-mask

[BaekJoon] 2167번: 2차원 배열의 합 (Python)

June 30 2023

implementation, dp

[BaekJoon] 2108번: 통계학 (Python)

June 30 2023

math, implementation, sorting

[BaekJoon] 17413번: 단어 뒤집기 2 (Python)

June 30 2023

implementation, stack, string

[BaekJoon] 1292번: 쉽게 푸는 문제 (Python)

June 30 2023

implementation, math

[BaekJoon] 9093번: 단어 뒤집기 (Python)

June 09 2023

implementation, string

[BaekJoon] 17478번: 재귀함수가 뭔가요? (Python)

June 09 2023

implementation, recursion

[BaekJoon] 1100번: 하얀 칸 (Python)

June 09 2023

implementation, string

[BaekJoon] 10866번: 덱 (Python)

June 09 2023

implementation, data-structure, deque

[BaekJoon] 10798번: 세로읽기 (Python)

June 09 2023

implementation, string

[BaekJoon] 10828번: 스택 (Python)

June 04 2023

implementation, data-structure, stack

[BaekJoon] 2566번: 최댓값 (Python)

May 16 2023

implementation

[BaekJoon] 1032번: 명령 프롬프트 (Python)

May 15 2023

implementation, string

[BaekJoon] 2587번: 대표값2 (Python)

May 14 2023

implementation, math, sorting

[BaekJoon] 10162번: 전자레인지 (Python)

May 12 2023

implementation, math, greedy

[BaekJoon] 2914번: 저작권 (Python)

May 11 2023

implementation, math

[BaekJoon] 2455번: 지능형 기차 (Python)

May 10 2023

implementation, math

[BaekJoon] 11723번: 집합 (Python)

May 09 2023

implementation, bitmask

[BaekJoon] 10988번: 팰린드롬인지 확인하기 (Python)

May 08 2023

implementation, string

[BaekJoon] 2490번: 윷놀이 (Python)

April 28 2023

implementation

[BaekJoon] 2738번: 행렬 덧셈 (Python)

April 27 2023

implementation, math

[BaekJoon] 1475번: 방 번호 (Python)

April 27 2023

implementation

[BaekJoon] 10808번: 알파벳 개수 (Python)

April 26 2023

implementation, string

[BaekJoon] 2563번: 색종이 (Python)

April 25 2023

implementation

[BaekJoon] 1259번: 팰린드롬수 (Python)

April 24 2023

implementation, string

[BaekJoon] 2747번: 피보나치 수 (Python)

April 21 2023

implementation, math

[BaekJoon] 1966번: 프린터 큐 (Python)

April 20 2023

implementation, data-structure, simulation, queue

[BaekJoon] 11050번: 이항 계수 1 (Python)

April 19 2023

implementation, math, combinatorics

[BaekJoon] 1158번: 요세푸스 문제 (Python)

April 18 2023

implementation, data-structure, queue

[BaekJoon] 10773번: 제로 (Python)

April 17 2023

implementation, data-structure, stack

[BaekJoon] 25304번: 영수증 (Python)

April 14 2023

implementation, math

[BaekJoon] 1924번: 2007년 (Python)

April 13 2023

implementation, math

[BaekJoon] 7568번: 덩치 (Python)

April 12 2023

implementation, brute-force

[BaekJoon] 3003번: 킹, 퀸, 룩, 비숍, 나이트, 폰 (Python)

April 11 2023

implementation, math

[BaekJoon] 2920번: 음계 (Python)

April 10 2023

implementation

[BaekJoon] 2775번: 부녀회장이 될테야 (Python)

April 07 2023

implementation, math, dp

[BaekJoon] 1193번: 분수찾기 (Python)

April 06 2023

implementation, math

[BaekJoon] 10250번: ACM 호텔 (Python)

April 05 2023

implementation, math

[BaekJoon] 2941번: 크로아티아 알파벳 (Python)

April 04 2023

implementation, string

[BaekJoon] 5622번: 다이얼 (Python)

April 03 2023

implementation

[BaekJoon] 10817번: 세 수 (Python)

April 03 2023

implementation, sorting

[BaekJoon] 1316번: 그룹 단어 체커 (Python)

March 31 2023

implementation, string

[BaekJoon] 4673번: 셀프 넘버 (Python)

March 30 2023

implementation, brute-force, math

[BaekJoon] 2675번: 문자열 반복 (Python)

March 29 2023

implementation, string

[BaekJoon] 1157번: 단어 공부 (Python)

March 29 2023

implementation, string

[BaekJoon] 2480번: 주사위 세개 (Python)

March 28 2023

implementation, math

[BaekJoon] 1152번: 단어의 개수 (Python)

March 28 2023

implementation, string

[BaekJoon] 10809번: 알파벳 찾기 (Python)

March 28 2023

implementation, string

[BaekJoon] 8958번: OX퀴즈 (Python)

March 27 2023

implementation, string

[BaekJoon] 2562번: 최댓값 (Python)

March 27 2023

implementation

[HackerRank] Append and Delete (failed) (Java)

February 07 2023

Append and Delete, implementation

[HackerRank] Super Reduced String (Java)

February 05 2023

Super Reduced String, implementation

[HackerRank] Number Line Jumps (Java)

February 04 2023

Number Line Jumps, implementation

[Codeforces] 25A - IQ test (Java)

January 30 2023

IQ test, implementation, brute-force

[BaekJoon] 1076번: 저항 (Java)

January 04 2023

저항, implementation

[BaekJoon] 1009번: 분산처리

January 04 2023

algorithms, implementation

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sorting

[Algorithm] 문자열 정렬 방법 (Java, Python)

December 22 2023

Comparing 사용

[Programmers] H-Index (Python)

October 31 2023

algorithms, python, sorting

[Programmers] 가장 큰 수 (Python)

October 30 2023

algorithms, python, sorting

[Programmers] K번째수 (Python)

October 27 2023

algorithms, python, sorting

[BaekJoon] 1931번: 회의실 배정 (Python)

September 04 2023

algorithms, python, greedy, sorting

[LeetCode] 455. Assign Cookies (Python)

September 03 2023

python, algorithms, array, two-pointer, greddy, sorting

[LeetCode] 406. Queue Reconstruction by Height (Python)

September 03 2023

python, algorithms, array, greedy, sorting

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[BaekJoon] 2437번: 저울 (Python)

August 11 2023

algorithms, python, greedy, sorting

[BaekJoon] 1449번: 수리공 항승 (Python)

August 10 2023

algorithms, python, greedy, sorting

[BaekJoon] 1744번: 수 묶기 (Python)

August 09 2023

algorithms, python, greedy, sorting

[BaekJoon] 2075번: N번째 큰 수 (Python)

August 08 2023

algorithms, python, data-structure, sorting, priority-queue

[BaekJoon] 1202번: 보석 도둑 (Python)

August 07 2023

algorithms, python, data-structure, greedy, sorting, priority-queue

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 75. Sort Colors (Python)

August 05 2023

python, algorithms, array, two-pointers, sorting, dnf

[LeetCode] 242. Valid Anagram (Python)

August 05 2023

python, algorithms, hash-table, string, sorting

[LeetCode] 179. Largest Number (Python)

August 05 2023

python, algorithms, array, string, greedy, sorting

[BaekJoon] 2170번: 선 긋기 (Python)

August 04 2023

algorithms, python, sorting, sweeping

[BaekJoon] 2170번: 선 긋기 (Python)

August 04 2023

algorithms, python, sorting, sweeping

[BaekJoon] 2470번: 두 용액 (Python)

August 03 2023

algorithms, python, sorting, binary-search, two-pointer

[BaekJoon] 11497번: 통나무 건너뛰기 (Python)

August 02 2023

algorithms, python, greedy, sorting

[BaekJoon] 1302번: 베스트셀러 (Python)

August 01 2023

algorithms, python, string, sorting, hash-table

[BaekJoon] 11399번: ATM (Python)

July 31 2023

algorithms, python, greedy, sorting

[LeetCode] 56. Merge Intervals (Python)

July 29 2023

python, algorithms, array, sorting

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 147. Insertion Sort List (Python)

July 29 2023

python, algorithms, linked-list, sorting

[BaekJoon] 11000번: 강의실 배정 (Python)

July 26 2023

algorithms, python, data-structure, greedy, priority-queue, sorting

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

[BaekJoon] 5052번: 전화번호 목록 (Python)

July 18 2023

algorithms, python, data-structure, string, sorting, tree

[BaekJoon] 2108번: 통계학 (Python)

June 30 2023

math, implementation, sorting

[LeetCode] 347. Top K Frequent Elements (Python)

June 10 2023

array, hash-table, sorting, counter

[BaekJoon] 3273번: 두 수의 합 (Python)

June 09 2023

sorting, two-pointer

[BaekJoon] 11656번: 접미사 배열 (Python)

June 09 2023

sorting, string

[BaekJoon] 1946번: 신입 사원 (Python)

June 02 2023

greedy, sorting

[BaekJoon] 10825번: 국영수 (Python)

June 01 2023

sorting

[BaekJoon] 10610번: 30 (Python)

May 31 2023

math, string, greedy, sorting, number-theory

[BaekJoon] 10816번: 숫자 카드 2 (Python)

May 30 2023

data-structure, sorting, binary-search, hash-table

[BaekJoon] 2309번: 일곱 난쟁이 (Python)

May 29 2023

brute-force, sorting

[BaekJoon] 11651번: 좌표 정렬하기 2 (Python)

May 28 2023

sorting

[BaekJoon] 1764번: 듣보잡 (Python)

May 26 2023

data-structure, string, sorting, hash-table

[BaekJoon] 1026번: 보물 (Python)

May 25 2023

math, greedy, sorting

[BaekJoon] 10815번: 숫자 카드 (Python)

May 24 2023

data-structure, sorting, binary-search

[BaekJoon] 1931번: 회의실 배정 (Python)

May 23 2023

greedy, sorting

[BaekJoon] 1920번: 수 찾기 (Python)

May 22 2023

data-structure, sorting, binary-search

[BaekJoon] 11650번: 좌표 정렬하기 (Python)

May 22 2023

sorting

[BaekJoon] 10814번: 나이순 정렬 (Python)

May 22 2023

sorting

[LeetCode] 561. Array Partition (Python)

May 20 2023

array, greedy, sorting, counting-sort

[LeetCode] 15. 3Sum (Python)

May 20 2023

array, two-pointers, sorting

[BaekJoon] 1181번: 단어 정렬 (Python)

May 18 2023

string, sorting

[BaekJoon] 2587번: 대표값2 (Python)

May 14 2023

implementation, math, sorting

[LeetCode] 937. Reorder Data in Log Files (Python)

May 13 2023

array, string, sorting

[LeetCode] 49. Group Anagrams (Python)

May 13 2023

array, hash-table, string, sorting

[BaekJoon] 10817번: 세 수 (Python)

April 03 2023

implementation, sorting

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

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string

[Algorithm] 문자열 정렬 방법 (Java, Python)

December 22 2023

Comparing 사용

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

September 05 2023

algorithms, python, math, greedy, string, parsing

[BaekJoon] 12891번: DNA 비밀번호 (Python)

August 29 2023

algorithms, python, string, sliding-window

[LeetCode] 76. Minimum Window Substring (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 424. Longest Repeating Character Replacement (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[BaekJoon] 17419번: 비트가 넘쳐흘러 (Python)

August 23 2023

algorithms, python, math, string, bit-mask

[LeetCode] 242. Valid Anagram (Python)

August 05 2023

python, algorithms, hash-table, string, sorting

[LeetCode] 179. Largest Number (Python)

August 05 2023

python, algorithms, array, string, greedy, sorting

[BaekJoon] 1302번: 베스트셀러 (Python)

August 01 2023

algorithms, python, string, sorting, hash-table

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[BaekJoon] 14725번: 개미굴 (Python)

July 27 2023

algorithms, python, data-structure, string, tree, trie

[LeetCode] 208. Implement Trie (Prefix Tree) (Python)

July 22 2023

python, algorithms, hash-table, string, design, trie

[BaekJoon] 5052번: 전화번호 목록 (Python)

July 18 2023

algorithms, python, data-structure, string, sorting, tree

[BaekJoon] 17413번: 단어 뒤집기 2 (Python)

June 30 2023

implementation, stack, string

[LeetCode] 17. Letter Combinations of a Phone Number (Python)

June 17 2023

hash-table, string, back-tracking

[LeetCode] 771. Jewels and Stones (Python)

June 10 2023

hash-table, string

[LeetCode] 3. Longest Substring Without Repeating Characters (Python)

June 10 2023

hash-table, string, sliding-window

[BaekJoon] 9093번: 단어 뒤집기 (Python)

June 09 2023

implementation, string

[BaekJoon] 14425번: 문자열 집합 (Python)

June 09 2023

data-structure, string, hash-table

[BaekJoon] 11656번: 접미사 배열 (Python)

June 09 2023

sorting, string

[BaekJoon] 1100번: 하얀 칸 (Python)

June 09 2023

implementation, string

[BaekJoon] 10798번: 세로읽기 (Python)

June 09 2023

implementation, string

[BaekJoon] 4949번: 균형잡힌 세상 (Python)

June 08 2023

data-structure, stack, string

[LeetCode] 20. Valid Parentheses (Python)

June 03 2023

string, stack

[BaekJoon] 10610번: 30 (Python)

May 31 2023

math, string, greedy, sorting, number-theory

[BaekJoon] 1764번: 듣보잡 (Python)

May 26 2023

data-structure, string, sorting, hash-table

[파이썬 알고리즘 인터뷰] 알고리즘 문자열 풀이 기법 정리

May 21 2023

6장. 문자열 조작, LeetCode 문제 기반

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

May 19 2023

math, string, greedy

[BaekJoon] 1181번: 단어 정렬 (Python)

May 18 2023

string, sorting

[BaekJoon] 9012번: 괄호 (Python)

May 17 2023

data-structure, string, stack

[BaekJoon] 1032번: 명령 프롬프트 (Python)

May 15 2023

implementation, string

[LeetCode] 937. Reorder Data in Log Files (Python)

May 13 2023

array, string, sorting

[LeetCode] 819. Most Common Word (Python)

May 13 2023

hash-table, string, counting

[LeetCode] 5. Longest Palindromic Substring (Python)

May 13 2023

string, dp, two-pointer

[LeetCode] 49. Group Anagrams (Python)

May 13 2023

array, hash-table, string, sorting

[BaekJoon] 10988번: 팰린드롬인지 확인하기 (Python)

May 08 2023

implementation, string

[LeetCode] 344. Reverse String (Python)

April 29 2023

two-pointers, string

[LeetCode] 125. Valid Palindrome (Python)

April 29 2023

two-pointers, string

[BaekJoon] 10808번: 알파벳 개수 (Python)

April 26 2023

implementation, string

[BaekJoon] 1259번: 팰린드롬수 (Python)

April 24 2023

implementation, string

[BaekJoon] 2941번: 크로아티아 알파벳 (Python)

April 04 2023

implementation, string

[BaekJoon] 1316번: 그룹 단어 체커 (Python)

March 31 2023

implementation, string

[LeetCode] 13. Roman to Integer (Python)

March 14 2023

python, hash-table, math, string

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array

[LeetCode] 455. Assign Cookies (Python)

September 03 2023

python, algorithms, array, two-pointer, greddy, sorting

[LeetCode] 406. Queue Reconstruction by Height (Python)

September 03 2023

python, algorithms, array, greedy, sorting

[LeetCode] 134. Gas Station (Python)

September 03 2023

python, algorithms, array, greedy

[LeetCode] 122. Best Time to Buy and Sell Stock II (Python)

September 03 2023

python, algorithms, array, dp, greedy

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[LeetCode] 136. Single Number (Python)

August 19 2023

python, algorithms, array, bit-manipulation

[LeetCode] 704. Binary Search (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[LeetCode] 33. Search in Rotated Sorted Array (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 240. Search a 2D Matrix II (Python)

August 12 2023

python, algorithms, array, binary-search, divide-and-conquer, matrix

[LeetCode] 167. Two Sum II - Input Array Is Sorted (Python)

August 12 2023

python, algorithms, array, two-pointer, binary-search

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 75. Sort Colors (Python)

August 05 2023

python, algorithms, array, two-pointers, sorting, dnf

[LeetCode] 179. Largest Number (Python)

August 05 2023

python, algorithms, array, string, greedy, sorting

[LeetCode] 56. Merge Intervals (Python)

July 29 2023

python, algorithms, array, sorting

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[LeetCode] 46. Permutations (Python)

June 17 2023

array, back-tracking, permutation

[LeetCode] 39. Combination Sum (Python)

June 17 2023

array, back-tracking

[LeetCode] 200. Number of Islands (Python)

June 17 2023

array, dfs, bfs, union-find

[LeetCode] 706. Design HashMap (Python)

June 10 2023

array, hash-table, linked-list, design, hash-function

[LeetCode] 641. Design Circular Deque (Python)

June 10 2023

array, linked-list, design, queue

[LeetCode] 347. Top K Frequent Elements (Python)

June 10 2023

array, hash-table, sorting, counter

[LeetCode] 561. Array Partition (Python)

May 20 2023

array, greedy, sorting, counting-sort

[LeetCode] 42. Trapping Rain Water (Python)

May 20 2023

array, two-pointers, dp, stack

[LeetCode] 238. Product of Array Except Self (Python)

May 20 2023

array, prefix-sum

[LeetCode] 15. 3Sum (Python)

May 20 2023

array, two-pointers, sorting

[LeetCode] 937. Reorder Data in Log Files (Python)

May 13 2023

array, string, sorting

[LeetCode] 49. Group Anagrams (Python)

May 13 2023

array, hash-table, string, sorting

[LeetCode] 1. Two Sum (Python)

March 24 2023

python, array, hash-table

[LeetCode] 283. Move Zeroes (Python)

March 13 2023

python, array, two-pointers

[LeetCode] 1313. Decompress Run-Length Encoded List (Python)

March 12 2023

python, algorithms, array

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

[LeetCode] 118. Pascal’s Triangle (Python)

March 08 2023

python, algorithms, array, dp

[LeetCode] 136. Single Number (Python)

March 07 2023

python, algorithms, array, bit-manipulation

[LeetCode] 2574. Left and Right Sum Differences (Python)

March 04 2023

python, algorithms, array, prefix-sum

[LeetCode] 35. Search Insert Position (Java)

February 22 2023

array, binary-search

Back to top ↑

data-structure

[BaekJoon] 2075번: N번째 큰 수 (Python)

August 08 2023

algorithms, python, data-structure, sorting, priority-queue

[BaekJoon] 1202번: 보석 도둑 (Python)

August 07 2023

algorithms, python, data-structure, greedy, sorting, priority-queue

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[BaekJoon] 14725번: 개미굴 (Python)

July 27 2023

algorithms, python, data-structure, string, tree, trie

[BaekJoon] 11000번: 강의실 배정 (Python)

July 26 2023

algorithms, python, data-structure, greedy, priority-queue, sorting

[BaekJoon] 1715번: 카드 정렬하기 (Python)

July 25 2023

algorithms, python, data-structure, greedy, priority-queue

[BaekJoon] 1927번, 11279번: 최소 힙, 최대 힙 (Python)

July 24 2023

algorithms, python, data-structure, priority-queue

[BaekJoon] 5052번: 전화번호 목록 (Python)

July 18 2023

algorithms, python, data-structure, string, sorting, tree

[BaekJoon] 9375번: 패션왕 신해빈 (Python)

June 16 2023

data-structure, math, hash-table, combinatorics

[BaekJoon] 1021번: 회전하는 큐 (Python)

June 15 2023

data-structure, deque

[BaekJoon] 1406번: 에디터 (Python)

June 14 2023

data-structure, stack, linked-list

[BaekJoon] 11286번: 절댓값 힙 (Python)

June 13 2023

data-structure, priority-queue

[BaekJoon] 10799번: 쇠막대기 (Python)

June 12 2023

data-structure, stack

[BaekJoon] 1927번: 최소 힙 (Python)

June 09 2023

data-structure, priority-queue

[BaekJoon] 18258번: 큐2 (Python)

June 09 2023

data-structure, queue

[BaekJoon] 1620번: 나는야 포켓몬 마스터 이다솜 (Python)

June 09 2023

data-structure, hash-table

[BaekJoon] 14425번: 문자열 집합 (Python)

June 09 2023

data-structure, string, hash-table

[BaekJoon] 11279번: 최대 힙 (Python)

June 09 2023

data-structure, priority-queue

[BaekJoon] 10866번: 덱 (Python)

June 09 2023

implementation, data-structure, deque

[BaekJoon] 4949번: 균형잡힌 세상 (Python)

June 08 2023

data-structure, stack, string

[BaekJoon] 1874번: 스택 수열 (Python)

June 07 2023

data-structure, stack

[BaekJoon] 2164번: 카드2 (Python)

June 05 2023

data-structure, queue

[BaekJoon] 10845번: 큐 (Python)

June 04 2023

data-structure, queue

[BaekJoon] 10828번: 스택 (Python)

June 04 2023

implementation, data-structure, stack

[BaekJoon] 10816번: 숫자 카드 2 (Python)

May 30 2023

data-structure, sorting, binary-search, hash-table

[BaekJoon] 1764번: 듣보잡 (Python)

May 26 2023

data-structure, string, sorting, hash-table

[BaekJoon] 10815번: 숫자 카드 (Python)

May 24 2023

data-structure, sorting, binary-search

[BaekJoon] 1920번: 수 찾기 (Python)

May 22 2023

data-structure, sorting, binary-search

[BaekJoon] 9012번: 괄호 (Python)

May 17 2023

data-structure, string, stack

[BaekJoon] 1966번: 프린터 큐 (Python)

April 20 2023

implementation, data-structure, simulation, queue

[BaekJoon] 1158번: 요세푸스 문제 (Python)

April 18 2023

implementation, data-structure, queue

[BaekJoon] 10773번: 제로 (Python)

April 17 2023

implementation, data-structure, stack

Back to top ↑

dfs

[BaekJoon] 3584번: 가장 가까운 공통 조상 (Python)

July 21 2023

algorithms, python, graph, tree, lca, dfs

[BaekJoon] 9372번: 상근이의 여행 (Python)

July 17 2023

graph

[LeetCode] 938. Range Sum of BST (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 783. Minimum Distance Between BST Nodes (Python)

July 16 2023

tree, dfs, bfs, binary-search-tree, binary-tree

[LeetCode] 1038. Binary Search Tree to Greater Sum Tree (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 310. Minimum Height Trees (Python)

July 15 2023

bfs, dfs, graph

[LeetCode] 110. Balanced Binary Tree (Python)

July 15 2023

tree, dfs, binary-tree

[LeetCode] 617. Merge Two Binary Trees (Python)

July 14 2023

tree, dfs, bfs, binary-tree

[BaekJoon] 1068번: 트리 (Python)

July 14 2023

tree, dfs

[BaekJoon] 1967번: 트리의 지름 (Python)

July 12 2023

tree, bfs, dfs

[BaekJoon] 11725번: 트리의 부모 찾기 (Python)

July 11 2023

tree, bfs, dfs

[LeetCode] 226. Invert Binary Tree (Python)

July 05 2023

graph, dfs, bfs, binary-tree

[LeetCode] 687. Longest Univalue Path (Python)

July 04 2023

graph, dfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

July 03 2023

graph, dfs, binary-tree

[BaekJoon] 2468번: 안전 영역 (Python)

June 27 2023

graph, dfs, bfs, brute-force

[BaekJoon] 4963번: 섬의 개수 (Python)

June 26 2023

graph, dfs, bfs

[LeetCode] 78. Subsets (Python)

June 24 2023

array, back-tracking, dfs

[LeetCode] 332. Reconstruct Itinerary (Python)

June 24 2023

graph, dfs

[LeetCode] 207. Course Schedule (Python)

June 24 2023

graph, bfs, dfs

[BaekJoon] 11724번: 연결 요소의 개수 (Python)

June 23 2023

graph, dfs, bfs

[BaekJoon] 1012번: 유기농 배추 (Python)

June 22 2023

graph, dfs, bfs

[BaekJoon] 2667번: 단지번호 붙이기 (Python)

June 21 2023

graph, dfs, bfs

[BaekJoon] 2606번: 바이러스 (Python)

June 20 2023

graph, dfs, bfs

[BaekJoon] 1260번: DFS와 BFS (Python)

June 19 2023

graph, dfs, bfs

[LeetCode] 200. Number of Islands (Python)

June 17 2023

array, dfs, bfs, union-find

[LeetCode] 101. Symmetric Tree (Python)

March 17 2023

python, tree, dfs, bfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

March 15 2023

python, tree, dfs, binary-tree

[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Python)

March 05 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 94. Binary Tree Inorder Traversal (Python)

March 03 2023

python, algorithms, stack, tree ,dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

March 02 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 226. Invert Binary Tree (Java)

February 22 2023

tree, depth-first-search, breadth-first-search, binary-tree

Back to top ↑

hash-table

[Programmers] 베스트앨범 (Python)

October 13 2023

algorithms, python, hash-table

[Programmers] 의상 (Python)

October 12 2023

algorithms, python, hash-table

[Programmers] 전화번호 목록 (Python)

October 11 2023

algorithms, python, hash-table

[Programmers] 완주하지 못한 선수 (Python)

October 10 2023

algorithms, python, hash-table

[Programmers] 폰켓몬 (Python)

October 09 2023

algorithms, python, hash-table

[LeetCode] 76. Minimum Window Substring (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 424. Longest Repeating Character Replacement (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[LeetCode] 242. Valid Anagram (Python)

August 05 2023

python, algorithms, hash-table, string, sorting

[BaekJoon] 1302번: 베스트셀러 (Python)

August 01 2023

algorithms, python, string, sorting, hash-table

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[LeetCode] 208. Implement Trie (Prefix Tree) (Python)

July 22 2023

python, algorithms, hash-table, string, design, trie

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[LeetCode] 17. Letter Combinations of a Phone Number (Python)

June 17 2023

hash-table, string, back-tracking

[BaekJoon] 9375번: 패션왕 신해빈 (Python)

June 16 2023

data-structure, math, hash-table, combinatorics

[LeetCode] 771. Jewels and Stones (Python)

June 10 2023

hash-table, string

[LeetCode] 706. Design HashMap (Python)

June 10 2023

array, hash-table, linked-list, design, hash-function

[LeetCode] 347. Top K Frequent Elements (Python)

June 10 2023

array, hash-table, sorting, counter

[LeetCode] 3. Longest Substring Without Repeating Characters (Python)

June 10 2023

hash-table, string, sliding-window

[BaekJoon] 1620번: 나는야 포켓몬 마스터 이다솜 (Python)

June 09 2023

data-structure, hash-table

[BaekJoon] 14425번: 문자열 집합 (Python)

June 09 2023

data-structure, string, hash-table

[BaekJoon] 10816번: 숫자 카드 2 (Python)

May 30 2023

data-structure, sorting, binary-search, hash-table

[BaekJoon] 1764번: 듣보잡 (Python)

May 26 2023

data-structure, string, sorting, hash-table

[LeetCode] 819. Most Common Word (Python)

May 13 2023

hash-table, string, counting

[LeetCode] 49. Group Anagrams (Python)

May 13 2023

array, hash-table, string, sorting

[LeetCode] 1. Two Sum (Python)

March 24 2023

python, array, hash-table

[LeetCode] 141. Linked List Cycle (Python)

March 23 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 160. Intersection of Two Linked Lists (Python)

March 20 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 13. Roman to Integer (Python)

March 14 2023

python, hash-table, math, string

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

Back to top ↑

math

[LeetCode] 509. Fibonacci Number (Python)

September 09 2023

python, algorithms, math, dp, recursion, memoization

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

September 05 2023

algorithms, python, math, greedy, string, parsing

[BaekJoon] 17419번: 비트가 넘쳐흘러 (Python)

August 23 2023

algorithms, python, math, string, bit-mask

[LeetCode] 371. Sum of Two Integers (Python)

August 19 2023

python, algorithms, math, bit-manipulation

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[BaekJoon] 2108번: 통계학 (Python)

June 30 2023

math, implementation, sorting

[BaekJoon] 1292번: 쉽게 푸는 문제 (Python)

June 30 2023

implementation, math

[BaekJoon] 9375번: 패션왕 신해빈 (Python)

June 16 2023

data-structure, math, hash-table, combinatorics

[BaekJoon] 10610번: 30 (Python)

May 31 2023

math, string, greedy, sorting, number-theory

[BaekJoon] 1026번: 보물 (Python)

May 25 2023

math, greedy, sorting

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

May 19 2023

math, string, greedy

[BaekJoon] 2587번: 대표값2 (Python)

May 14 2023

implementation, math, sorting

[BaekJoon] 10162번: 전자레인지 (Python)

May 12 2023

implementation, math, greedy

[BaekJoon] 2914번: 저작권 (Python)

May 11 2023

implementation, math

[BaekJoon] 2455번: 지능형 기차 (Python)

May 10 2023

implementation, math

[BaekJoon] 3052번: 나머지 (Python)

May 06 2023

math

[BaekJoon] 1546번: 평균 (Python)

May 06 2023

math

[BaekJoon] 2738번: 행렬 덧셈 (Python)

April 27 2023

implementation, math

[BaekJoon] 2747번: 피보나치 수 (Python)

April 21 2023

implementation, math

[BaekJoon] 11050번: 이항 계수 1 (Python)

April 19 2023

implementation, math, combinatorics

[BaekJoon] 25304번: 영수증 (Python)

April 14 2023

implementation, math

[BaekJoon] 1924번: 2007년 (Python)

April 13 2023

implementation, math

[BaekJoon] 3003번: 킹, 퀸, 룩, 비숍, 나이트, 폰 (Python)

April 11 2023

implementation, math

[BaekJoon] 2775번: 부녀회장이 될테야 (Python)

April 07 2023

implementation, math, dp

[BaekJoon] 1193번: 분수찾기 (Python)

April 06 2023

implementation, math

[BaekJoon] 10250번: ACM 호텔 (Python)

April 05 2023

implementation, math

[BaekJoon] 4673번: 셀프 넘버 (Python)

March 30 2023

implementation, brute-force, math

[BaekJoon] 2480번: 주사위 세개 (Python)

March 28 2023

implementation, math

[LeetCode] 70. Climbing Stairs (Python)

March 21 2023

python, math, dp, memorization

[LeetCode] 13. Roman to Integer (Python)

March 14 2023

python, hash-table, math, string

Back to top ↑

greedy

[Programmers] 조이스틱 (Python)

November 24 2023

algorithms, python, greedy

[Programmers] 체육복 (Python)

November 23 2023

algorithms, python, greedy

[BaekJoon] 16953번: A -> B (Python)

September 08 2023

algorithms, python, greedy, bfs

[BaekJoon] 1715번: 카드 정렬하기 (Python)

September 07 2023

algorithms, python, greedy, priority-queue

[BaekJoon] 13305번: 주유소 (Python)

September 06 2023

algorithms, python, greedy

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

September 05 2023

algorithms, python, math, greedy, string, parsing

[BaekJoon] 1931번: 회의실 배정 (Python)

September 04 2023

algorithms, python, greedy, sorting

[LeetCode] 406. Queue Reconstruction by Height (Python)

September 03 2023

python, algorithms, array, greedy, sorting

[LeetCode] 134. Gas Station (Python)

September 03 2023

python, algorithms, array, greedy

[LeetCode] 122. Best Time to Buy and Sell Stock II (Python)

September 03 2023

python, algorithms, array, dp, greedy

[BaekJoon] 2437번: 저울 (Python)

August 11 2023

algorithms, python, greedy, sorting

[BaekJoon] 1449번: 수리공 항승 (Python)

August 10 2023

algorithms, python, greedy, sorting

[BaekJoon] 1744번: 수 묶기 (Python)

August 09 2023

algorithms, python, greedy, sorting

[BaekJoon] 1202번: 보석 도둑 (Python)

August 07 2023

algorithms, python, data-structure, greedy, sorting, priority-queue

[LeetCode] 179. Largest Number (Python)

August 05 2023

python, algorithms, array, string, greedy, sorting

[BaekJoon] 11497번: 통나무 건너뛰기 (Python)

August 02 2023

algorithms, python, greedy, sorting

[BaekJoon] 11399번: ATM (Python)

July 31 2023

algorithms, python, greedy, sorting

[BaekJoon] 11000번: 강의실 배정 (Python)

July 26 2023

algorithms, python, data-structure, greedy, priority-queue, sorting

[BaekJoon] 1715번: 카드 정렬하기 (Python)

July 25 2023

algorithms, python, data-structure, greedy, priority-queue

[BaekJoon] 1946번: 신입 사원 (Python)

June 02 2023

greedy, sorting

[BaekJoon] 10610번: 30 (Python)

May 31 2023

math, string, greedy, sorting, number-theory

[BaekJoon] 1026번: 보물 (Python)

May 25 2023

math, greedy, sorting

[BaekJoon] 1931번: 회의실 배정 (Python)

May 23 2023

greedy, sorting

[LeetCode] 561. Array Partition (Python)

May 20 2023

array, greedy, sorting, counting-sort

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

May 19 2023

math, string, greedy

[BaekJoon] 10162번: 전자레인지 (Python)

May 12 2023

implementation, math, greedy

[BaekJoon] 11047번: 동전 0

December 29 2022

동전 0, greedy

[BaekJoon] 11399번: ATM (Java)

December 28 2022

ATM, greedy

[BaekJoon] 2839번: 설탕 배달 (Java)

December 27 2022

설탕 배달, greedy

Back to top ↑

tree

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[BaekJoon] 14725번: 개미굴 (Python)

July 27 2023

algorithms, python, data-structure, string, tree, trie

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[BaekJoon] 3584번: 가장 가까운 공통 조상 (Python)

July 21 2023

algorithms, python, graph, tree, lca, dfs

[BaekJoon] 11437번: LCA (Python)

July 20 2023

algorithms, python, graph, tree, lca

[BaekJoon] 2263번: 트리의 순회 (Python)

July 19 2023

algorithms, python, tree, recursion, divide-and-conquer

[BaekJoon] 5052번: 전화번호 목록 (Python)

July 18 2023

algorithms, python, data-structure, string, sorting, tree

[BaekJoon] 9372번: 상근이의 여행 (Python)

July 17 2023

graph

[LeetCode] 938. Range Sum of BST (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 783. Minimum Distance Between BST Nodes (Python)

July 16 2023

tree, dfs, bfs, binary-search-tree, binary-tree

[LeetCode] 1038. Binary Search Tree to Greater Sum Tree (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 110. Balanced Binary Tree (Python)

July 15 2023

tree, dfs, binary-tree

[LeetCode] 108. Convert Sorted Array to Binary Search Tree (Python)

July 15 2023

tree, binary-search-tree, binary-tree

[LeetCode] 617. Merge Two Binary Trees (Python)

July 14 2023

tree, dfs, bfs, binary-tree

[BaekJoon] 1068번: 트리 (Python)

July 14 2023

tree, dfs

[BaekJoon] 5639번: 이진 검색 트리 (Python)

July 13 2023

tree, recursion

[BaekJoon] 1967번: 트리의 지름 (Python)

July 12 2023

tree, bfs, dfs

[BaekJoon] 11725번: 트리의 부모 찾기 (Python)

July 11 2023

tree, bfs, dfs

[BaekJoon] 1991번: 트리 순회 (Python)

July 10 2023

tree, recursion

[LeetCode] 101. Symmetric Tree (Python)

March 17 2023

python, tree, dfs, bfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

March 15 2023

python, tree, dfs, binary-tree

[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Python)

March 05 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 94. Binary Tree Inorder Traversal (Python)

March 03 2023

python, algorithms, stack, tree ,dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

March 02 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 226. Invert Binary Tree (Java)

February 22 2023

tree, depth-first-search, breadth-first-search, binary-tree

[Data Structure] Heap & Tree (힙 & 트리)

May 20 2022

힙과 트리 정리

Back to top ↑

bfs

[BaekJoon] 16953번: A -> B (Python)

September 08 2023

algorithms, python, greedy, bfs

[LeetCode] 783. Minimum Distance Between BST Nodes (Python)

July 16 2023

tree, dfs, bfs, binary-search-tree, binary-tree

[LeetCode] 310. Minimum Height Trees (Python)

July 15 2023

bfs, dfs, graph

[LeetCode] 617. Merge Two Binary Trees (Python)

July 14 2023

tree, dfs, bfs, binary-tree

[BaekJoon] 1967번: 트리의 지름 (Python)

July 12 2023

tree, bfs, dfs

[BaekJoon] 11725번: 트리의 부모 찾기 (Python)

July 11 2023

tree, bfs, dfs

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

July 01 2023

graph, bfs, binary-tree

[BaekJoon] 7562번: 나이트의 이동 (Python)

June 30 2023

graph, bfs

[BaekJoon] 1697번: 숨바꼭질 (Python)

June 29 2023

graph, bfs

[BaekJoon] 2178번: 미로 탐색 (Python)

June 28 2023

graph, bfs

[BaekJoon] 2468번: 안전 영역 (Python)

June 27 2023

graph, dfs, bfs, brute-force

[BaekJoon] 4963번: 섬의 개수 (Python)

June 26 2023

graph, dfs, bfs

[LeetCode] 207. Course Schedule (Python)

June 24 2023

graph, bfs, dfs

[BaekJoon] 11724번: 연결 요소의 개수 (Python)

June 23 2023

graph, dfs, bfs

[BaekJoon] 1012번: 유기농 배추 (Python)

June 22 2023

graph, dfs, bfs

[BaekJoon] 2667번: 단지번호 붙이기 (Python)

June 21 2023

graph, dfs, bfs

[BaekJoon] 2606번: 바이러스 (Python)

June 20 2023

graph, dfs, bfs

[BaekJoon] 1260번: DFS와 BFS (Python)

June 19 2023

graph, dfs, bfs

[LeetCode] 200. Number of Islands (Python)

June 17 2023

array, dfs, bfs, union-find

[LeetCode] 101. Symmetric Tree (Python)

March 17 2023

python, tree, dfs, bfs, binary-tree

[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Python)

March 05 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

March 02 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 226. Invert Binary Tree (Java)

February 22 2023

tree, depth-first-search, breadth-first-search, binary-tree

Back to top ↑

stack

[Programmers] 주식가격 (Python)

October 23 2023

algorithms, python, stack, queue

[Programmers] 다리를 지나는 트럭 (Python)

October 20 2023

algorithms, python, stack, queue

[Programmers] 프로세스 (Python)

October 19 2023

algorithms, python, stack, queue

[Programmers] 기능개발 (Python)

October 18 2023

algorithms, python, stack, queue

[Programmers] 올바른 괄호 (Python)

October 17 2023

algorithms, python, stack, queue

[Programmers] 같은 숫자는 싫어 (Python)

October 16 2023

algorithms, python, stack, queue

[BaekJoon] 17413번: 단어 뒤집기 2 (Python)

June 30 2023

implementation, stack, string

[BaekJoon] 1406번: 에디터 (Python)

June 14 2023

data-structure, stack, linked-list

[BaekJoon] 10799번: 쇠막대기 (Python)

June 12 2023

data-structure, stack

[BaekJoon] 4949번: 균형잡힌 세상 (Python)

June 08 2023

data-structure, stack, string

[BaekJoon] 1874번: 스택 수열 (Python)

June 07 2023

data-structure, stack

[BaekJoon] 10828번: 스택 (Python)

June 04 2023

implementation, data-structure, stack

[LeetCode] 225. Implement Stack using Queues (Python)

June 03 2023

stack, design, queue

[LeetCode] 20. Valid Parentheses (Python)

June 03 2023

string, stack

[LeetCode] 42. Trapping Rain Water (Python)

May 20 2023

array, two-pointers, dp, stack

[BaekJoon] 9012번: 괄호 (Python)

May 17 2023

data-structure, string, stack

[BaekJoon] 10773번: 제로 (Python)

April 17 2023

implementation, data-structure, stack

[LeetCode] 234. Palindrome Linked List (Python)

March 22 2023

python, linked-list, two-pointers, stack, recursion

[LeetCode] 94. Binary Tree Inorder Traversal (Python)

March 03 2023

python, algorithms, stack, tree ,dfs, binary-tree

[자료구조] Stack and Queue (스택과 큐)

May 19 2022

스택과 큐 정리

Back to top ↑

graph

[BaekJoon] 3584번: 가장 가까운 공통 조상 (Python)

July 21 2023

algorithms, python, graph, tree, lca, dfs

[BaekJoon] 11437번: LCA (Python)

July 20 2023

algorithms, python, graph, tree, lca

[BaekJoon] 9372번: 상근이의 여행 (Python)

July 17 2023

graph

[LeetCode] 310. Minimum Height Trees (Python)

July 15 2023

bfs, dfs, graph

[LeetCode] 226. Invert Binary Tree (Python)

July 05 2023

graph, dfs, bfs, binary-tree

[LeetCode] 687. Longest Univalue Path (Python)

July 04 2023

graph, dfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

July 03 2023

graph, dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

July 01 2023

graph, bfs, binary-tree

[BaekJoon] 7562번: 나이트의 이동 (Python)

June 30 2023

graph, bfs

[BaekJoon] 1697번: 숨바꼭질 (Python)

June 29 2023

graph, bfs

[BaekJoon] 2178번: 미로 탐색 (Python)

June 28 2023

graph, bfs

[BaekJoon] 2468번: 안전 영역 (Python)

June 27 2023

graph, dfs, bfs, brute-force

[BaekJoon] 4963번: 섬의 개수 (Python)

June 26 2023

graph, dfs, bfs

[LeetCode] 332. Reconstruct Itinerary (Python)

June 24 2023

graph, dfs

[LeetCode] 207. Course Schedule (Python)

June 24 2023

graph, bfs, dfs

[BaekJoon] 11724번: 연결 요소의 개수 (Python)

June 23 2023

graph, dfs, bfs

[BaekJoon] 1012번: 유기농 배추 (Python)

June 22 2023

graph, dfs, bfs

[BaekJoon] 2667번: 단지번호 붙이기 (Python)

June 21 2023

graph, dfs, bfs

[BaekJoon] 2606번: 바이러스 (Python)

June 20 2023

graph, dfs, bfs

[BaekJoon] 1260번: DFS와 BFS (Python)

June 19 2023

graph, dfs, bfs

Back to top ↑

java

[Algorithm] 문자열 정렬 방법 (Java, Python)

December 22 2023

Comparing 사용

[Programmers] 기둥과 보 설치 (Python, Java)

December 07 2023

algorithms, python, java, 2020 KAKAO BLIND RECRUITMENT

[Programmers] 길 찾기 게임 (Python, Java)

December 07 2023

algorithms, python, java, 2019 KAKAO BLIND RECRUITMENT

[Spring] 의존성 주입(DI)과 생성자 주입 정리

April 02 2023

DI(Dependency Injection), 생성자 주입

[Java] Collection / Annotation / Generic 정리

March 27 2023

cs 공부

[Spring] 스프링 컨테이너와 스프링 빈 정리

March 26 2023

IOC, Bean

[Programmers] 신고 결과 받기 (Java)

March 01 2023

2022 KAKAO BLIND RECRUITMENT

[Programmers] 크레인 인형뽑기 게임 (Java)

March 01 2023

2019 카카오 개발자 겨울 인턴십

[Programmers] 개인정보 수집 유효기간 (Java)

February 28 2023

2023 KAKAO BLIND RECRUITMENT

[Programmers] 성격 유형 검사하기 (Java)

February 28 2023

2022 KAKAO TECH INTERNSHIP

[Programmers] 신규 아이디 추천 (Java)

February 22 2023

2021 KAKAO BLIND RECRUITMENT

[Programmers] 키패드 누르기 (Java)

February 22 2023

2020 카카오 인턴십

[LeetCode] 35. Search Insert Position (Java)

February 22 2023

array, binary-search

[LeetCode] 226. Invert Binary Tree (Java)

February 22 2023

tree, depth-first-search, breadth-first-search, binary-tree

[Codeforces] 236A - Boy or Girl (Java)

November 27 2022

Boy or Girl

[HackerRank] Utopian Tree (Java)

September 18 2022

Utopian Tree

[Programmers] 핸드폰 번호 가리기 (Java)

April 25 2022

핸드폰 번호 가리기

Back to top ↑

binary-tree

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[LeetCode] 938. Range Sum of BST (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 783. Minimum Distance Between BST Nodes (Python)

July 16 2023

tree, dfs, bfs, binary-search-tree, binary-tree

[LeetCode] 1038. Binary Search Tree to Greater Sum Tree (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 110. Balanced Binary Tree (Python)

July 15 2023

tree, dfs, binary-tree

[LeetCode] 108. Convert Sorted Array to Binary Search Tree (Python)

July 15 2023

tree, binary-search-tree, binary-tree

[LeetCode] 617. Merge Two Binary Trees (Python)

July 14 2023

tree, dfs, bfs, binary-tree

[LeetCode] 226. Invert Binary Tree (Python)

July 05 2023

graph, dfs, bfs, binary-tree

[LeetCode] 687. Longest Univalue Path (Python)

July 04 2023

graph, dfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

July 03 2023

graph, dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

July 01 2023

graph, bfs, binary-tree

[LeetCode] 101. Symmetric Tree (Python)

March 17 2023

python, tree, dfs, bfs, binary-tree

[LeetCode] 543. Diameter of Binary Tree (Python)

March 15 2023

python, tree, dfs, binary-tree

[LeetCode] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree (Python)

March 05 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 94. Binary Tree Inorder Traversal (Python)

March 03 2023

python, algorithms, stack, tree ,dfs, binary-tree

[LeetCode] 104. Maximum Depth of Binary Tree (Python)

March 02 2023

python, algorithms, tree, dfs, bfs, binary-tree

[LeetCode] 226. Invert Binary Tree (Java)

February 22 2023

tree, depth-first-search, breadth-first-search, binary-tree

Back to top ↑

queue

[Programmers] 주식가격 (Python)

October 23 2023

algorithms, python, stack, queue

[Programmers] 다리를 지나는 트럭 (Python)

October 20 2023

algorithms, python, stack, queue

[Programmers] 프로세스 (Python)

October 19 2023

algorithms, python, stack, queue

[Programmers] 기능개발 (Python)

October 18 2023

algorithms, python, stack, queue

[Programmers] 올바른 괄호 (Python)

October 17 2023

algorithms, python, stack, queue

[Programmers] 같은 숫자는 싫어 (Python)

October 16 2023

algorithms, python, stack, queue

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[LeetCode] 641. Design Circular Deque (Python)

June 10 2023

array, linked-list, design, queue

[BaekJoon] 18258번: 큐2 (Python)

June 09 2023

data-structure, queue

[BaekJoon] 2164번: 카드2 (Python)

June 05 2023

data-structure, queue

[BaekJoon] 10845번: 큐 (Python)

June 04 2023

data-structure, queue

[LeetCode] 225. Implement Stack using Queues (Python)

June 03 2023

stack, design, queue

[BaekJoon] 1966번: 프린터 큐 (Python)

April 20 2023

implementation, data-structure, simulation, queue

[BaekJoon] 1158번: 요세푸스 문제 (Python)

April 18 2023

implementation, data-structure, queue

[자료구조] Stack and Queue (스택과 큐)

May 19 2022

스택과 큐 정리

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binary-search

[BaekJoon] 7795번: 먹을 것인가 먹힐 것인가 (Python)

August 18 2023

algorithms, python, binary-search, two-pointer

[BaekJoon] 2343번: 기타 레슨 (Python)

August 17 2023

algorithms, python, binary-search

[BaekJoon] 2512번: 예산 (Python)

August 16 2023

algorithms, python, binary-search

[BaekJoon] 2110번: 공유기 설치 (Python)

August 15 2023

algorithms, python, binary-search

[BaekJoon] 2805번: 나무 자르기 (Python)

August 14 2023

algorithms, python, binary-search

[LeetCode] 704. Binary Search (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[LeetCode] 33. Search in Rotated Sorted Array (Python)

August 12 2023

python, algorithms, array, binary-search

[LeetCode] 240. Search a 2D Matrix II (Python)

August 12 2023

python, algorithms, array, binary-search, divide-and-conquer, matrix

[LeetCode] 167. Two Sum II - Input Array Is Sorted (Python)

August 12 2023

python, algorithms, array, two-pointer, binary-search

[BaekJoon] 2470번: 두 용액 (Python)

August 03 2023

algorithms, python, sorting, binary-search, two-pointer

[BaekJoon] 10816번: 숫자 카드 2 (Python)

May 30 2023

data-structure, sorting, binary-search, hash-table

[BaekJoon] 10815번: 숫자 카드 (Python)

May 24 2023

data-structure, sorting, binary-search

[BaekJoon] 1920번: 수 찾기 (Python)

May 22 2023

data-structure, sorting, binary-search

[LeetCode] 35. Search Insert Position (Java)

February 22 2023

array, binary-search

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dp

[BaekJoon] 1890번: 점프 (Python)

September 15 2023

algorithms, python, dp

[BaekJoon] 2293번: 동전 1 (Python)

September 14 2023

algorithms, python, dp

[BaekJoon] 2688번: 줄어들지 않아 (Python)

September 13 2023

algorithms, python, dp

[BaekJoon] 10844번: 쉬운 계단 수 (Python)

September 12 2023

algorithms, python, dp

[BaekJoon] 2156번: 포도주 시식 (Python)

September 11 2023

algorithms, python, dp

[LeetCode] 509. Fibonacci Number (Python)

September 09 2023

python, algorithms, math, dp, recursion, memoization

[LeetCode] 122. Best Time to Buy and Sell Stock II (Python)

September 03 2023

python, algorithms, array, dp, greedy

[BaekJoon] 2096번: 내려가기 (Python)

August 28 2023

algorithms, python, dp, sliding-window

[BaekJoon] 2167번: 2차원 배열의 합 (Python)

June 30 2023

implementation, dp

[LeetCode] 42. Trapping Rain Water (Python)

May 20 2023

array, two-pointers, dp, stack

[LeetCode] 5. Longest Palindromic Substring (Python)

May 13 2023

string, dp, two-pointer

[BaekJoon] 2775번: 부녀회장이 될테야 (Python)

April 07 2023

implementation, math, dp

[LeetCode] 70. Climbing Stairs (Python)

March 21 2023

python, math, dp, memorization

[LeetCode] 121. Best Time to Buy and Sell Stock (Python)

March 16 2023

python, dp

[LeetCode] 118. Pascal’s Triangle (Python)

March 08 2023

python, algorithms, array, dp

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divide-and-conquer

[BaekJoon] 1992번: 쿼드트리 (Python)

September 22 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1780번: 종이의 개수 (Python)

September 21 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1074번: Z (Python)

September 20 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2630번: 색종이 만들기 (Python)

September 19 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2447번: 별 찍기 - 10 (Python)

September 18 2023

algorithms, python, divide-and-conquer

[LeetCode] 191. Number of 1 Bits (Python)

August 19 2023

python, algorithms, divide-and-conquer, bit-manipulation

[LeetCode] 240. Search a 2D Matrix II (Python)

August 12 2023

python, algorithms, array, binary-search, divide-and-conquer, matrix

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

[LeetCode] 105. Construct Binary Tree from Preorder and Inorder Traversal (Python)

July 22 2023

python, algorithms, array, hash-table, divide-and-conquer, tree, binary-tree

[BaekJoon] 2263번: 트리의 순회 (Python)

July 19 2023

algorithms, python, tree, recursion, divide-and-conquer

[LeetCode] 23. Merge k Sorted Lists (Python)

June 10 2023

linked-list, divide-and-conquer, priority-queue, merge-sort

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

Back to top ↑

linked-list

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 147. Insertion Sort List (Python)

July 29 2023

python, algorithms, linked-list, sorting

[BaekJoon] 1406번: 에디터 (Python)

June 14 2023

data-structure, stack, linked-list

[LeetCode] 706. Design HashMap (Python)

June 10 2023

array, hash-table, linked-list, design, hash-function

[LeetCode] 641. Design Circular Deque (Python)

June 10 2023

array, linked-list, design, queue

[LeetCode] 23. Merge k Sorted Lists (Python)

June 10 2023

linked-list, divide-and-conquer, priority-queue, merge-sort

[LeetCode] 141. Linked List Cycle (Python)

March 23 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 234. Palindrome Linked List (Python)

March 22 2023

python, linked-list, two-pointers, stack, recursion

[LeetCode] 160. Intersection of Two Linked Lists (Python)

March 20 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 21. Merge Two Sorted Lists (Python)

March 10 2023

python, algorithms, linked-list, recursion

[LeetCode] 206. Reverse Linked List (Python)

March 06 2023

python, algorithms, linked-list, recursion

[자료구조] Linked List (연결 리스트)

May 19 2022

Linked List 정리

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recursion

[BaekJoon] 1992번: 쿼드트리 (Python)

September 22 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1780번: 종이의 개수 (Python)

September 21 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 1074번: Z (Python)

September 20 2023

algorithms, python, divide-and-conquer, recursion

[BaekJoon] 2630번: 색종이 만들기 (Python)

September 19 2023

algorithms, python, divide-and-conquer, recursion

[LeetCode] 509. Fibonacci Number (Python)

September 09 2023

python, algorithms, math, dp, recursion, memoization

[BaekJoon] 2263번: 트리의 순회 (Python)

July 19 2023

algorithms, python, tree, recursion, divide-and-conquer

[BaekJoon] 5639번: 이진 검색 트리 (Python)

July 13 2023

tree, recursion

[BaekJoon] 1991번: 트리 순회 (Python)

July 10 2023

tree, recursion

[BaekJoon] 17478번: 재귀함수가 뭔가요? (Python)

June 09 2023

implementation, recursion

[LeetCode] 234. Palindrome Linked List (Python)

March 22 2023

python, linked-list, two-pointers, stack, recursion

[LeetCode] 21. Merge Two Sorted Lists (Python)

March 10 2023

python, algorithms, linked-list, recursion

[LeetCode] 206. Reverse Linked List (Python)

March 06 2023

python, algorithms, linked-list, recursion

Back to top ↑

priority-queue

[BaekJoon] 1715번: 카드 정렬하기 (Python)

September 07 2023

algorithms, python, greedy, priority-queue

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[BaekJoon] 2075번: N번째 큰 수 (Python)

August 08 2023

algorithms, python, data-structure, sorting, priority-queue

[BaekJoon] 1202번: 보석 도둑 (Python)

August 07 2023

algorithms, python, data-structure, greedy, sorting, priority-queue

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[BaekJoon] 11000번: 강의실 배정 (Python)

July 26 2023

algorithms, python, data-structure, greedy, priority-queue, sorting

[BaekJoon] 1715번: 카드 정렬하기 (Python)

July 25 2023

algorithms, python, data-structure, greedy, priority-queue

[BaekJoon] 1927번, 11279번: 최소 힙, 최대 힙 (Python)

July 24 2023

algorithms, python, data-structure, priority-queue

[BaekJoon] 11286번: 절댓값 힙 (Python)

June 13 2023

data-structure, priority-queue

[LeetCode] 23. Merge k Sorted Lists (Python)

June 10 2023

linked-list, divide-and-conquer, priority-queue, merge-sort

[BaekJoon] 1927번: 최소 힙 (Python)

June 09 2023

data-structure, priority-queue

[BaekJoon] 11279번: 최대 힙 (Python)

June 09 2023

data-structure, priority-queue

Back to top ↑

two-pointers

[LeetCode] 349. Intersection of Two Arrays (Python)

August 12 2023

python, algorithms, array, hash-table, two-pointers, binary-search, sorting

[LeetCode] 75. Sort Colors (Python)

August 05 2023

python, algorithms, array, two-pointers, sorting, dnf

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 42. Trapping Rain Water (Python)

May 20 2023

array, two-pointers, dp, stack

[LeetCode] 15. 3Sum (Python)

May 20 2023

array, two-pointers, sorting

[LeetCode] 344. Reverse String (Python)

April 29 2023

two-pointers, string

[LeetCode] 125. Valid Palindrome (Python)

April 29 2023

two-pointers, string

[LeetCode] 141. Linked List Cycle (Python)

March 23 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 234. Palindrome Linked List (Python)

March 22 2023

python, linked-list, two-pointers, stack, recursion

[LeetCode] 160. Intersection of Two Linked Lists (Python)

March 20 2023

python, hash-table, linked-list, two-pointers

[LeetCode] 283. Move Zeroes (Python)

March 13 2023

python, array, two-pointers

Back to top ↑

ioc

[Spring] IoC 컨테이너 공식문서 번역 (Method Injection)

June 10 2023

메서드 주입

[Spring] IoC 컨테이너 공식문서 번역 (Lazy-initialized Beans)

June 03 2023

지연 초기화 빈

[Spring] IoC 컨테이너 공식문서 번역 (Using depends-on)

June 03 2023

의존성 사용

[Spring] IoC 컨테이너 공식문서 번역 (Autowiring Collaborators)

June 03 2023

Autowiring 협력자

[Spring] IoC 컨테이너 공식문서 번역 (Dependencies and Configuration in Detail)

May 19 2023

의존성 및 구성 상세 정보

[Spring] IoC 컨테이너 공식문서 번역 (Dependency Injection)

May 13 2023

의존성 주입

[Spring] IoC 컨테이너 공식문서 번역 (Dependencies)

May 12 2023

의존성

[Spring] IoC 컨테이너 공식문서 번역 (Bean Overview)

May 06 2023

Bean 개요

[Spring] IoC 컨테이너 공식문서 번역 (Container Overview)

April 23 2023

컨테이너 개요

[Spring] IoC 컨테이너 공식문서 번역 (Introduction to the Spring IoC Container and Beans)

April 16 2023

Spring IoC 컨테이너 및 Beans 소개

Back to top ↑

sliding-window

[BaekJoon] 21921번: 블로그 (Python)

September 01 2023

algorithms, python, sliding-window

[BaekJoon] 15961번: 회전 초밥 (Python)

August 31 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 2559번: 수열 (Python)

August 30 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 12891번: DNA 비밀번호 (Python)

August 29 2023

algorithms, python, string, sliding-window

[BaekJoon] 2096번: 내려가기 (Python)

August 28 2023

algorithms, python, dp, sliding-window

[LeetCode] 76. Minimum Window Substring (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 424. Longest Repeating Character Replacement (Python)

August 27 2023

python, algorithms, hash-table, string, sliding-window

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[LeetCode] 3. Longest Substring Without Repeating Characters (Python)

June 10 2023

hash-table, string, sliding-window

Back to top ↑

brute-force

[Programmers] 모의고사 (Python)

November 02 2023

algorithms, python, brute-force

[Programmers] 최소직사각형 (Python)

November 01 2023

algorithms, python, brute-force

[BaekJoon] 2961번: 도영이가 만든 맛있는 음식 (Python)

August 22 2023

algorithms, python, brute-force, bit-mask, back-tracking

[BaekJoon] 2468번: 안전 영역 (Python)

June 27 2023

graph, dfs, bfs, brute-force

[BaekJoon] 2309번: 일곱 난쟁이 (Python)

May 29 2023

brute-force, sorting

[BaekJoon] 7568번: 덩치 (Python)

April 12 2023

implementation, brute-force

[BaekJoon] 4673번: 셀프 넘버 (Python)

March 30 2023

implementation, brute-force, math

[Codeforces] 25A - IQ test (Java)

January 30 2023

IQ test, implementation, brute-force

Back to top ↑

two-pointer

[LeetCode] 455. Assign Cookies (Python)

September 03 2023

python, algorithms, array, two-pointer, greddy, sorting

[BaekJoon] 15961번: 회전 초밥 (Python)

August 31 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 2559번: 수열 (Python)

August 30 2023

algorithms, python, two-pointer, sliding-window

[BaekJoon] 7795번: 먹을 것인가 먹힐 것인가 (Python)

August 18 2023

algorithms, python, binary-search, two-pointer

[LeetCode] 167. Two Sum II - Input Array Is Sorted (Python)

August 12 2023

python, algorithms, array, two-pointer, binary-search

[BaekJoon] 2470번: 두 용액 (Python)

August 03 2023

algorithms, python, sorting, binary-search, two-pointer

[BaekJoon] 3273번: 두 수의 합 (Python)

June 09 2023

sorting, two-pointer

[LeetCode] 5. Longest Palindromic Substring (Python)

May 13 2023

string, dp, two-pointer

Back to top ↑

heap

[Programmers] 디스크 컨트롤러 (Python)

October 25 2023

algorithms, python, heap

[Programmers] 더 맵게 (Python)

October 24 2023

algorithms, python, heap

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

[Data Structure] Heap & Tree (힙 & 트리)

May 20 2022

힙과 트리 정리

Back to top ↑

back-tracking

[BaekJoon] 2961번: 도영이가 만든 맛있는 음식 (Python)

August 22 2023

algorithms, python, brute-force, bit-mask, back-tracking

[LeetCode] 78. Subsets (Python)

June 24 2023

array, back-tracking, dfs

[LeetCode] 77. Combinations (Python)

June 17 2023

back-tracking, combination

[LeetCode] 46. Permutations (Python)

June 17 2023

array, back-tracking, permutation

[LeetCode] 39. Combination Sum (Python)

June 17 2023

array, back-tracking

[LeetCode] 17. Letter Combinations of a Phone Number (Python)

June 17 2023

hash-table, string, back-tracking

Back to top ↑

bit-manipulation

[LeetCode] 461. Hamming Distance (Python)

August 19 2023

python, algorithms, bit-manipulation

[LeetCode] 191. Number of 1 Bits (Python)

August 19 2023

python, algorithms, divide-and-conquer, bit-manipulation

[LeetCode] 371. Sum of Two Integers (Python)

August 19 2023

python, algorithms, math, bit-manipulation

[LeetCode] 136. Single Number (Python)

August 19 2023

python, algorithms, array, bit-manipulation

[LeetCode] 136. Single Number (Python)

March 07 2023

python, algorithms, array, bit-manipulation

Back to top ↑

stirng

[BaekJoon] 2675번: 문자열 반복 (Python)

March 29 2023

implementation, string

[BaekJoon] 1157번: 단어 공부 (Python)

March 29 2023

implementation, string

[BaekJoon] 1152번: 단어의 개수 (Python)

March 28 2023

implementation, string

[BaekJoon] 10809번: 알파벳 찾기 (Python)

March 28 2023

implementation, string

[BaekJoon] 8958번: OX퀴즈 (Python)

March 27 2023

implementation, string

Back to top ↑

bit-mask

[BaekJoon] 11811번: 데스스타 (Python)

August 25 2023

algorithms, python, mask, bit-mask

[BaekJoon] 15787번: 기차가 어둠을 헤치고 은하수를 (Python)

August 24 2023

algorithms, python, implementation, bit-mask

[BaekJoon] 17419번: 비트가 넘쳐흘러 (Python)

August 23 2023

algorithms, python, math, string, bit-mask

[BaekJoon] 2961번: 도영이가 만든 맛있는 음식 (Python)

August 22 2023

algorithms, python, brute-force, bit-mask, back-tracking

[BaekJoon] 1740번: 거듭제곱 (Python)

August 21 2023

algorithms, python, bit-mask

Back to top ↑

sort

[Database] CS 스터디 3주차

December 19 2023

클러스터링, 레플리케이션, 정규화, view, join

[Database] CS 스터디 2주차

December 12 2023

Key, RDB, NoSQL, Transaction, ACID, Index

[Data Structure] CS 스터디 1주차

December 02 2023

시간복잡도, 공간복잡도, 링크드 리스트, 스택, 큐, 해시, 트리, 힙, 정렬

[Data Structure] Sort (정렬)

May 20 2022

정렬 정리

Back to top ↑

design

[LeetCode] 208. Implement Trie (Prefix Tree) (Python)

July 22 2023

python, algorithms, hash-table, string, design, trie

[LeetCode] 706. Design HashMap (Python)

June 10 2023

array, hash-table, linked-list, design, hash-function

[LeetCode] 641. Design Circular Deque (Python)

June 10 2023

array, linked-list, design, queue

[LeetCode] 225. Implement Stack using Queues (Python)

June 03 2023

stack, design, queue

Back to top ↑

binary-search-tree

[LeetCode] 938. Range Sum of BST (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 783. Minimum Distance Between BST Nodes (Python)

July 16 2023

tree, dfs, bfs, binary-search-tree, binary-tree

[LeetCode] 1038. Binary Search Tree to Greater Sum Tree (Python)

July 16 2023

tree, dfs, binary-search-tree, binary-tree

[LeetCode] 108. Convert Sorted Array to Binary Search Tree (Python)

July 15 2023

tree, binary-search-tree, binary-tree

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trie

[BaekJoon] 16934번: 게임 닉네임 (Python)

July 28 2023

algorithms, python, data-structure, string, tree, trie, hash-table

[BaekJoon] 14725번: 개미굴 (Python)

July 27 2023

algorithms, python, data-structure, string, tree, trie

[LeetCode] 208. Implement Trie (Prefix Tree) (Python)

July 22 2023

python, algorithms, hash-table, string, design, trie

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prefix-sum

[LeetCode] 238. Product of Array Except Self (Python)

May 20 2023

array, prefix-sum

[LeetCode] 2574. Left and Right Sum Differences (Python)

March 04 2023

python, algorithms, array, prefix-sum

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counting

[LeetCode] 819. Most Common Word (Python)

May 13 2023

hash-table, string, counting

[LeetCode] 169. Majority Element (Python)

March 09 2023

python, algorithms, array, hash-table, divide-and-conquer, sorting, counting

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object

[Java] 오브젝트 CHAPTER 11 - 합성과 유연한 설계

March 23 2023

합성과 유연한 설계

[Java] 오브젝트 CHAPTER 10 - 상속과 코드 재사용

March 23 2023

상속과 코드 재사용

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permutation

[LeetCode] 46. Permutations (Python)

June 17 2023

array, back-tracking, permutation

[알고리즘 구현] 순열과 조합 구현 (Python)

April 09 2023

Permutation, Combination, 재귀, 백트래킹, 그리디

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combinatorics

[BaekJoon] 9375번: 패션왕 신해빈 (Python)

June 16 2023

data-structure, math, hash-table, combinatorics

[BaekJoon] 11050번: 이항 계수 1 (Python)

April 19 2023

implementation, math, combinatorics

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database

[Database] M1 Mac과 Docker 환경에서 PostGreSQL과 PgAdmin4 설치

June 15 2023

The Complete SQL Bootcamp: Go from Zero to Hero

[Database] Relational vs Transactional Data Models

June 05 2023

데이터베이스 관계 (1:1, 1:N, N:M)

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deque

[BaekJoon] 1021번: 회전하는 큐 (Python)

June 15 2023

data-structure, deque

[BaekJoon] 10866번: 덱 (Python)

June 09 2023

implementation, data-structure, deque

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merge-sort

[LeetCode] 148. Sort List (Python)

July 29 2023

python, algorithms, linked-list, two-pointers, divide-and-conquer, sorting, merge-sort

[LeetCode] 23. Merge k Sorted Lists (Python)

June 10 2023

linked-list, divide-and-conquer, priority-queue, merge-sort

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lca

[BaekJoon] 3584번: 가장 가까운 공통 조상 (Python)

July 21 2023

algorithms, python, graph, tree, lca, dfs

[BaekJoon] 11437번: LCA (Python)

July 20 2023

algorithms, python, graph, tree, lca

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quick-select

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

[LeetCode] 215. Kth Largest Element in an Array (Python)

July 22 2023

python, algorithms, array, divide-and-conquer, sorting, heap, quick-select

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spring-boot

[Spring] 파일 업로드

May 09 2024

spring boot, servlet, upload

[Spring] 액츄에이터, 마이크로미터, 프로메테우스, 그라파나 - 모니터링

February 17 2024

spring boot, monitoring, actuator, micrometer, prometheus, grafana

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big-oh

[자료구조] Big-Oh notation (빅 오 표기법)

May 17 2022

빅 오 표기법 정리

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comparable

[자료구조] Comparable 인터페이스

May 17 2022

객체지향 정리

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generic

[자료구조] Generic 프로그래밍

May 17 2022

객체지향 정리

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oop

[자료구조] Object-Oriented Programming (객체지향 프로그래밍)

May 17 2022

객체지향 정리

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time-complexity

[자료구조] Time Complexity (시간 복잡도)

May 17 2022

시간 복잡도 정리

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avl-tree

[Data Structure] AVL Tree (AVL 트리)

May 20 2022

AVL 트리 정리

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hash

[Data Structure] Hash (해시)

May 20 2022

Hash 정리

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red-black-tree

[Data Structure] Red Black Tree (레드 블랙 트리)

May 20 2022

레드 블랙 트리 정리

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lru

[Programmers] [1차] 캐시 (Python)

March 11 2023

2018 KAKAO BLIND RECRUITMENT

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memorization

[LeetCode] 70. Climbing Stairs (Python)

March 21 2023

python, math, dp, memorization

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combinaiton

[알고리즘 구현] 순열과 조합 구현 (Python)

April 09 2023

Permutation, Combination, 재귀, 백트래킹, 그리디

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simulation

[BaekJoon] 1966번: 프린터 큐 (Python)

April 20 2023

implementation, data-structure, simulation, queue

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bitmask

[BaekJoon] 11723번: 집합 (Python)

May 09 2023

implementation, bitmask

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counting-sort

[LeetCode] 561. Array Partition (Python)

May 20 2023

array, greedy, sorting, counting-sort

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interview

[파이썬 알고리즘 인터뷰] 알고리즘 문자열 풀이 기법 정리

May 21 2023

6장. 문자열 조작, LeetCode 문제 기반

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number-theory

[BaekJoon] 10610번: 30 (Python)

May 31 2023

math, string, greedy, sorting, number-theory

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counter

[LeetCode] 347. Top K Frequent Elements (Python)

June 10 2023

array, hash-table, sorting, counter

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hash-function

[LeetCode] 706. Design HashMap (Python)

June 10 2023

array, hash-table, linked-list, design, hash-function

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postgresql

[Database] M1 Mac과 Docker 환경에서 PostGreSQL과 PgAdmin4 설치

June 15 2023

The Complete SQL Bootcamp: Go from Zero to Hero

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union-find

[LeetCode] 200. Number of Islands (Python)

June 17 2023

array, dfs, bfs, union-find

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combination

[LeetCode] 77. Combinations (Python)

June 17 2023

back-tracking, combination

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sweeping

[BaekJoon] 2170번: 선 긋기 (Python)

August 04 2023

algorithms, python, sorting, sweeping

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dnf

[LeetCode] 75. Sort Colors (Python)

August 05 2023

python, algorithms, array, two-pointers, sorting, dnf

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geometry

[LeetCode] 973. K Closest Points to Origin (Python)

August 05 2023

python, algorithms, array, math, divide-and-conquer, geometry, sorting, heap, priority-queue, quick-select

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matrix

[LeetCode] 240. Search a 2D Matrix II (Python)

August 12 2023

python, algorithms, array, binary-search, divide-and-conquer, matrix

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mask

[BaekJoon] 11811번: 데스스타 (Python)

August 25 2023

algorithms, python, mask, bit-mask

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monotonic-queue

[LeetCode] 239. Sliding Window Maximum (Python)

August 27 2023

python, algorithms, array, queue, sliding-window, heap, priority-queue, monotonic-queue

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greddy

[LeetCode] 455. Assign Cookies (Python)

September 03 2023

python, algorithms, array, two-pointer, greddy, sorting

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parsing

[BaekJoon] 1541번: 잃어버린 괄호 (Python)

September 05 2023

algorithms, python, math, greedy, string, parsing

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memoization

[LeetCode] 509. Fibonacci Number (Python)

September 09 2023

python, algorithms, math, dp, recursion, memoization

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setting

[Java] M1 Mac OS 환경 - Java JDK 17 설정

October 19 2023

M1 Pro 환경

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2021 카카오 채용연계형 인턴십

[Programmers] 표 편집 (Python)

November 30 2023

algorithms, python, 2021 카카오 채용연계형 인턴십

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Summer/Winter Coding(2019)

[Programmers] 멀쩡한 사각형 (Python)

November 30 2023

algorithms, python, Summer/Winter Coding(2019)

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2019 KAKAO BLIND RECRUITMENT

[Programmers] 길 찾기 게임 (Python, Java)

December 07 2023

algorithms, python, java, 2019 KAKAO BLIND RECRUITMENT

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2020 KAKAO BLIND RECRUITMENT

[Programmers] 기둥과 보 설치 (Python, Java)

December 07 2023

algorithms, python, java, 2020 KAKAO BLIND RECRUITMENT

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2021 KAKAO BLIND RECRUITMENT

[Programmers] 광고 삽입 (Python, Java)

December 14 2023

algorithms, python, 2021 KAKAO BLIND RECRUITMENT

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2022 KAKAO BLIND RECRUITMENT

[Programmers] 양과 늑대 (Python, Java)

December 14 2023

algorithms, python, 2022 KAKAO BLIND RECRUITMENT

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2023 KAKAO BLIND RECRUITMENT

[Programmers] 표현 가능한 이진트리 (Python)

January 11 2024

algorithms, python, 2023 KAKAO BLIND RECRUITMENT

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monitoring

[Spring] 액츄에이터, 마이크로미터, 프로메테우스, 그라파나 - 모니터링

February 17 2024

spring boot, monitoring, actuator, micrometer, prometheus, grafana

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actuator

[Spring] 액츄에이터, 마이크로미터, 프로메테우스, 그라파나 - 모니터링

February 17 2024

spring boot, monitoring, actuator, micrometer, prometheus, grafana

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micrometer

[Spring] 액츄에이터, 마이크로미터, 프로메테우스, 그라파나 - 모니터링

February 17 2024

spring boot, monitoring, actuator, micrometer, prometheus, grafana

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prometheus

[Spring] 액츄에이터, 마이크로미터, 프로메테우스, 그라파나 - 모니터링

February 17 2024

spring boot, monitoring, actuator, micrometer, prometheus, grafana

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grafana

[Spring] 액츄에이터, 마이크로미터, 프로메테우스, 그라파나 - 모니터링

February 17 2024

spring boot, monitoring, actuator, micrometer, prometheus, grafana

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reflection

[Java] Reflection 개요

March 26 2024

reflection

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servlet

[Spring] 파일 업로드

May 09 2024

spring boot, servlet, upload

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upload

[Spring] 파일 업로드

May 09 2024

spring boot, servlet, upload

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