Algorithm Quiz Take quizzes to check your coding skills

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Title Title1 Category Difficulty Views Runs Submissions QuizId
노드깊이 II All Kinds of Node Depths Trees Medium 366 29 25 63a5ff6a-14a6-498a-802c-5362e12e7e19
아파트 헌팅 Apartment Hunting Arrays Hard 424 58 50 bdd555e1-dbba-419d-b5c5-6f5f8d2d8046
제품 배열 Array of Products Arrays Medium 339 25 22 29bfed37-34d2-4f7a-9174-41c066710b88
균형괄호 Balance Brackets Other Data Structures Medium 283 13 12 33737485-bc54-4d41-85ee-16804331decd
균등분할 Balanced Split Sorting Medium 317 41 37 dca6bc2f-0709-4af5-b3fc-0bc0caa19e9f
이진수정렬 Binary Array Sorting Sorting Easy 352 13 12 1d528165-29ad-4786-bb9d-80f0d00e9a44
이진검색 Binary Search Search Easy 312 13 11 fa284555-9fa3-41ca-9769-54148c7b7839
직경 Binary Tree Diameter Trees Medium 361 18 15 3d0be02d-27bf-4487-9d65-bcc21ca6d1ff
보글보드 Boggle Board Graphs Hard 357 29 27 a191353b-e04c-4326-824a-1dabffc28959
가지합 Branch Sums Trees Easy 273 16 13 f43bd3aa-72ac-4225-b0ec-0093e74f738f
Breadth-First Search (Tree) Breadth-First Search Graphs Easy 324 27 22 d892024f-cb85-4583-8168-700403534e83
Breadth-First Search (Graph) Breadth-First Search for a Graph Graphs Easy 398 41 35 2fbd1c69-3bfe-4842-8358-37d66acb7a5e
Heap 건설 Building Heap from Array Other Data Structures Medium 325 34 32 62955f2c-35d0-4500-bd6a-f0a3b7957fef
대소문자정렬 Case Specific Sorting Sorting Medium 267 20 16 370c6495-5582-4c18-a012-7beb7695cf1b
환전 Change in a Foreign Currency Recursion Easy 316 18 17 0174901c-a84f-431e-b5f1-6ff05223b255
클래스사진 Class Photos Greedy Algorithms Easy 286 19 13 a0c40fc6-ed97-4f35-99b2-f9022a874fc0
잎사귀 여행 Compare Leaf Traversal Trees Hard 396 25 21 8b9fd5fc-4237-4f54-86f6-a75d3a66f5d9
연속 부분배열 Contiguous Subarrays Arrays Medium 368 68 62 29f5de20-a7df-4194-b297-a865ebe30e1d
반전 카운트 Count Inversions Sorting Hard 313 36 30 a80ba629-ca5e-4c42-a17c-2082122b3302
삼각형수 Counting Triangles Sorting Easy 283 17 14 53e1c8e7-6f23-48a4-a80f-de48d37b1cb2
순환주기 그래프 Cycle in Graph Graphs Medium 355 11 10 9bfe19e6-33c8-454b-bb03-f28ebd35bfde
Depth-First Search (Tree) Depth-First Search Graphs Medium 291 30 25 8242a88d-9e9d-4243-b812-6ee1fa261f5a
Depth-First Search (Graph) Depth-First Search for a Graph Graphs Medium 736 49 37 edeb2e6f-ba52-416f-8f2d-9792a1653b9d
차익거래감지 Detect Arbitrage Graphs Hard 284 28 26 c79d939a-d4d7-45fe-b274-71644e84725c
Dijkstra 알고리즘 Dijkstra's Algorithm Graphs Hard 320 43 31 f3a9d0bc-c0a4-4620-8f1e-a20844888b3b
디스크쌓기 Disk Stacking Dynamic Programming Medium 286 34 30 5a4b41a3-a998-4425-9f4b-eca314b16ded
요소바꾸기 Element Swapping Greedy Algorithms Hard 339 15 13 546f658f-f529-4f45-89f8-ab1df09c489b
암호문자 Encrypted Words Recursion Easy 321 33 31 54fb0acf-ad06-41a8-ae78-d68e759c5f3e
친구찾기 Find Closest Value in BST Trees Easy 337 39 19 dc68f8c6-9dae-4808-b403-e7e75b481ef9
k번째 자식찾기 Find kth Largest Value in BST Trees Medium 324 16 13 0c5f3b10-9631-41e3-b4bc-1662c32d7eca
루프찾기 Find Loop Linked Lists Medium 295 32 17 e9641580-dca5-4964-8b81-3e241217a156
K거리 노드찾기 Find Nodes Distance K Trees Hard 484 34 32 71dc1ee6-4123-4981-82e5-9833d999e7d0
후계자 찾기 Find Successor Trees Medium 390 21 17 5f1a6274-d4a8-4ba2-b9a3-a625525591f1
3큰수 찾기 Find Three Largest Numbers Search Easy 352 14 11 2784e572-0870-4974-950a-cbe8770aa047
첫번째 중복값 First Duplicate Value Arrays Medium 352 18 17 07909752-ca94-4e73-b68c-9b25b985d23d
단한글자 First Non-Repeating Character Strings Easy 259 11 10 e05695eb-6b14-4197-b467-fd6cc037af9c
쫙펴기 Flatten Binary Tree Trees Hard 347 22 19 4ef6f1dc-567b-4f36-9692-356796c67598
4 숫자의 합 Four Number Sum Arrays Hard 470 26 24 d5b2d436-9fa5-4d89-a0d4-36bc5dec4a6e
빈도정렬 Frequency Sorting Sorting Medium 241 31 28 44fbfb95-ed85-4932-977d-47b6252fbdc3
DIV 만들기 Generate Div Tags Recursion Hard 326 14 12 ebc6b388-bca5-4fdc-98ca-1eca1894b974
문서만들기 Generate Document Strings Easy 234 31 28 001e33d1-c5b3-496b-9f46-ec1a9d12008a
단어수수께끼 Group Anagrams Strings Medium 347 26 22 7929f0a9-258e-4b45-916d-6f31eefca5cf
균형나무 Height Balanced Binary Tree Trees Medium 309 36 34 03b41c72-4927-48b4-b011-4ee71edb6502
인덱스==값 Index Equals Value Search Medium 311 14 13 4947883d-b0d5-43fb-ba36-a153a927bd37
문자열 짜집기 Interweaving Strings Dynamic Programming Hard 459 63 59 e0b4b7d2-b763-4bbd-a440-d01f8145a22e
뒤집기 Invert Binary Tree Trees Easy 232 15 14 54982c70-8007-429d-9f32-37288f2d5efa
Kadane 알고리즘 Kadane's Algorithm Dynamic Programming Medium 407 20 17 aea5dd58-e554-4a16-85f6-b14302747baf
Knapsack 문제 Knapsack Problem Dynamic Programming Medium 333 34 29 878a10e2-59ca-477c-be56-06b82b9776e5
Knuth-Morris-Pratt 알고리즘 Knuth-Morris-Pratt Algorithm Strings Hard 283 56 53 8f0ca5d6-892d-46a3-9c62-cc55076bb13d
노트북대여 Laptop Rentals Other Data Structures Hard 243 18 15 56778d96-2734-49eb-a899-17d540f38a56
최대 범위 Largest Range Arrays Hard 376 47 45 d06883f6-3bfc-4ac4-849b-abb98b91f9ab
최대공간 Largest Rectangle Under Skyline Other Data Structures Hard 328 46 42 434c475b-84c3-43da-aaeb-3c6387a0df8c
최대 세곱 Largest Triple Products Other Data Structures Easy 268 18 14 63d8f371-3eab-4f1c-b607-8511b640e6d0
가장 왼쪽 1 Leftmost One Search Medium 253 19 15 e8882c9c-a57e-40f1-8d55-e6dc304beb9a
Levenshtein 거리 Levenshtein Distance Dynamic Programming Easy 458 23 20 92eb0b84-5cb1-4d11-8530-6bc0fdc00ba1
점 통과 선 Line Through Points Arrays Hard 424 37 36 c77dfa69-ef0e-41c0-bcd5-169ff181f551
팔린드롬 Linked List Palindrome Linked Lists Hard 301 13 10 7ea54cf7-7a73-43f3-b3a5-333bd66eb87d
가장긴 균형괄호 Longest Balanced Substring Strings Hard 446 18 17 f66151b1-0dcd-4a5e-9b27-7dd322427f47
최대공통부분문자열 Longest Common Subsequence Dynamic Programming Medium 287 30 27 2f5bb51a-d674-4249-8a34-0b8ca1254d93
최대증가부분수열 Longest Increasing Subsequence Dynamic Programming Hard 318 30 29 df4c8ee1-ba20-4048-820d-8a450712a3f0
가장긴 Palindrome Longest Palindromic Substring Strings Medium 368 45 38 c981a480-28af-421d-adc0-77069519bddf
가장 긴 피크 Longest Peak Arrays Medium 651 37 31 451b794e-44ea-4b04-a953-fce025aff168
최대글자체인 Longest String Chain Dynamic Programming Hard 347 82 81 54125fdf-fba8-4f47-8a82-f88c6b3027d3
가장긴 하위문자열 Longest Substring without Duplication Strings Hard 349 34 30 666c719e-13e3-4955-ac64-cf21b1589a35
마법의 캔디백 Magical Candy Bags Other Data Structures Easy 304 30 22 2e832732-d15f-4aee-9463-75807e27ea70
주류 Majority Element Other Data Structures Easy 330 21 19 189cf214-5463-4657-8778-b6f337ce7256
Map Map Example Other Data Structures Easy 414 11 0 44baaca7-07e5-43b6-b021-62f014cc3758
짝꿍 Matching Pairs Strings Medium 272 34 30 dd69169b-1294-482c-b867-a52205da1530
최대경로 Max Path Sum in Binary Tree Trees Hard 527 24 21 27914402-f57d-4874-97d9-8916a239a794
K거래의 최대이익 Max Profit with K Transactions Dynamic Programming Hard 366 21 20 9a947131-807b-448f-a4b1-699450953a96
인접없는 최대하위집합 Max Subset Sum No Adjacent Dynamic Programming Easy 359 17 13 9e049768-f822-4a17-bd6d-b3e33575737c
증가부분수열의 최대합 Max Sum Increasing Subsequence Dynamic Programming Medium 324 57 37 57288c92-1ec7-4191-8e49-03079c2ad5a8
하위배열 최대합 Max Sum Submatrix Dynamic Programming Medium 564 25 23 1f334109-5dfd-4d5a-9f08-70be7cfc2a2b
최대표현 Maximize Expression Dynamic Programming Medium 283 29 27 eb1f39c6-d85c-42e9-91f3-36be00e344a8
중앙줄기 Median Stream Other Data Structures Easy 284 16 15 8d2f1cb0-ea2e-4b7c-9249-0319aa8f3706
합병 Merge Linked List Linked Lists Medium 319 18 12 6bdce984-944e-4449-bbc3-81dbad6988a5
중복간격 합치기 Merge Overlapping Intervals Arrays Medium 460 17 10 6c556707-6acf-4dfb-a864-8d4cf94947c0
합치기 Merge Sorted Arrays Other Data Structures Hard 309 21 18 47af8151-fcf1-4630-b44a-c610ab1d2e62
꼬마 BST Min Height BST Trees Medium 326 33 29 90c205a6-26b1-480c-a53c-779c073dc37a
잔돈의 최소갯수 Min Number of Coins for Change Dynamic Programming Easy 379 30 28 c828c69d-6e63-4c5e-8252-c782666ae7bd
최소점프 Min Number of Jumps Dynamic Programming Medium 350 26 25 64d115a3-2bd7-49ae-8ffe-9d68ef019c3e
최소한의 보상 Min Rewards Arrays Hard 380 22 22 de9b4df9-9cf5-4e17-9a7d-9f57578654e8
최소치환 Minimizing Permutations Graphs Easy 300 33 31 08201fea-58ed-4c45-99e7-e470f63192bd
최소한의 사각지역 Minimum Area Rectangle Arrays Hard 356 17 16 55641f9c-1cf5-4cdd-b660-6e03079d5249
최소글자 Minimum Characters for Words Strings Easy 333 24 23 f29794c3-b6d8-4e79-b2c8-6cc005288f50
가장짧은 하위문자열 Minimum Length Substrings Strings Medium 334 35 33 1a39f279-be7f-4e4b-8d2f-eb2254a8e871
음의요소 최소검색 Minimum Passes of Matrix Graphs Hard 295 33 32 8c4af6b8-7e41-48a3-9d84-cbad6b6eba25
최소 대기시간 Minimum Waiting Time Greedy Algorithms Easy 647 20 18 7ec0c085-0127-4bcc-94f7-adaf84824dad
단순배열 Monotonic Array Arrays Easy 2110 322 226 65e10dad-260f-4e09-a755-27e5d530a627
끝으로 옮기기 Move Element to End Arrays Medium 495 59 51 8b457645-de84-4922-a1e2-a0e1a5750671
다음 큰수 Next Greater Element Other Data Structures Medium 294 25 24 09ea80d0-5ea4-47b5-9a9f-dca57260baf8
노드깊이 I Node Depths Trees Easy 394 25 22 92824029-28c5-442c-81d6-c442139dd958
노드교환 Node Swap Linked Lists Easy 309 18 11 a174a124-d41d-4b47-b897-b85159657ca0
무적여왕 Non-Attacking Queens Recursion Hard 341 43 41 af8d9d67-ca24-4e28-b68f-0be3532e4530
만들수 없는 잔돈 Non-Constructible Change Arrays Easy 846 33 25 71f9864c-7c86-49dd-817e-e37ec0630f14
N번째 피보나찌 Nth Fibonacci Recursion Easy 484 32 29 cdf30892-a39b-40a3-82c0-bd7fcfca85c6
나무의 수 Number of Binary Tree Topologies Trees Easy 277 29 26 bae347ad-8fb3-4058-9082-53964185fb81
보이는 노드수 Number of Visible Nodes Trees Easy 250 15 14 4c6ebdd3-3a2e-4cf1-aa6e-8806ff9bb26b
거스름돈 만들기 Number of Ways to Make Change Dynamic Programming Easy 383 16 13 ac656504-2496-47f4-a2e7-768d9bc9e800
매트릭스 이동방법 Number of Ways to Traverse Graph Dynamic Programming Easy 461 20 18 a8177b50-b367-47ab-97ef-23c02504ab4f
10억 사용자 One Billion Users Search Medium 283 21 20 b95236d1-2a9c-49cd-aae6-a191a3bd79b2
쌍쌍더하기 Pair Sums Other Data Structures Medium 269 28 24 7d5b5a56-858e-490c-8add-fbceace72d9a
Palindrome 검사 Palindrome Check Strings Easy 391 14 11 5daf2034-1acd-4582-b6b7-0c01106af91b
최소한의 Palindrome 분할 Palindrome Partitioning Min Cuts Dynamic Programming Hard 292 20 19 fbedbb6e-3a21-4e13-b518-23299abaa645
졸업앨범 전달 Passing Yearbooks Arrays Medium 447 29 26 dad54ed9-f62c-49cf-97c4-8f647d9325a5
순열 Permutations Recursion Medium 303 36 35 95bad6cf-1e89-4ff2-934d-e4509c4cd416
전화번호암기 Phone Number Mnemonics Recursion Medium 371 13 10 a9c689ce-63ec-4aae-8e00-22d3445c1393
멱집합 Powerset Recursion Medium 286 19 18 ff54afb9-95eb-4eb3-b9d9-42dbc830ac88
Priority Queue Priority Queue Example Other Data Structures Easy 352 16 0 57e982fe-5bad-43df-8765-2232df6b46a6
Queue Queue Example Other Data Structures Easy 307 9 0 e374dfe3-ea4b-453a-bb93-d7ead5652068
큐지우기 Queue Removals Other Data Structures Medium 451 18 16 3a4e9397-d185-45f4-a566-af5502ccd9bc
빠른선택 Quickselect Search Hard 294 35 32 33cd99d6-9ecb-4d85-b462-efb3887ee1b0
링드리스트 빨리정렬 QuickSort on Singly Linked List Sorting Hard 284 47 35 c9d1eba8-5fd2-4682-94c9-df53aadfe239
재정렬 Rearrange Linked List Linked Lists Hard 272 22 16 c59429e6-181e-48dd-9621-52ae14690d78
BST 재건축 Reconstruct BST Trees Medium 324 61 59 81038138-4bd3-496e-baf0-7aded76eb9ee
직사각형 마니아 Rectangle Mania Other Data Structures Hard 242 8 7 0bbd17ae-00c6-4fd7-b489-a04e99638ca9
중복제거 Remove Duplicates from Linked List Linked Lists Easy 273 99 81 262dbb04-d3d2-4fce-8176-d41ac451b222
섬지우기 Remove Islands Graphs Hard 278 37 36 3cc32e9d-9618-43f5-b05a-18727bbf7ce6
끝에서 K번째 지우기 Remove Kth Node from End Linked Lists Easy 435 28 23 9a30fa11-90ba-449e-ba04-0a7e6e1c1a60
매출목표 Revenue Milestones Search Medium 292 19 16 cbbff6cb-1839-40b5-9469-d26a6ab6e588
뒤집기 Reverse Operations Linked Lists Medium 247 60 44 626b3937-4f64-415d-a4db-0db88a820e8a
반대로 똑같이 Reverse to Make Equal Arrays Easy 592 39 31 a51aebb6-a678-4635-a7a5-e2d9500da1e5
꺼꾸로 Reverse Words in String Strings Medium 333 35 32 cb88825e-e826-424d-8bb1-d5b35bbf2bda
나보다 적은 Right Smaller Than Trees Hard 354 29 20 84336977-96fd-4e3a-b2b5-b549797e5be7
강크기 River Sizes Graphs Medium 385 71 65 c385ea6f-d3da-41aa-a2e6-c02bbe7e05b7
회전암호 Rotational Cipher Strings Easy 245 13 12 1354cbdf-90eb-45af-bf2c-4e912b02f383
반복글자 압축 Run-Length Encoding Strings Easy 282 21 18 44dd4767-6ef7-489c-a98e-7f14f2d6b93a
같은 BST Same BSTs Trees Hard 361 27 23 ac47dbf3-c319-44d1-a008-434e75b14941
정배열 검색 Search in Sorted Matrix Search Medium 309 17 14 a63ca0d4-ee2a-41aa-94e4-5a6a9a9c3e3c
자리배열 Seating Arrangements Greedy Algorithms Hard 291 37 33 637af641-ef9d-4d46-a560-f6b9f953b3ed
Set Set Example Other Data Structures Easy 278 6 0 baceffd1-7e40-4050-9efe-8fdff96d2ae7
k 이동 Shift Linked List Linked Lists Medium 328 17 14 b5e98436-c87d-4fee-9856-4775733ab49a
변형된 이진검색 Shifted Binary Search Search Hard 306 16 13 aa01feb8-0b07-4774-ab64-1c9d3e7654ed
지름길 Shorten Path Other Data Structures Hard 263 14 12 e75e4748-5a02-46b1-b214-0a031e729a49
단일주기검사 Single Cycle Check Graphs Easy 378 22 16 c6e3ff7b-651b-41b2-aa98-c2b64bc89827
천천히 더하기 Slow Sums Greedy Algorithms Medium 358 22 18 3293e5f2-46a8-4b83-ae89-189423a581b9
최소차이 Smallest Difference Arrays Medium 332 15 13 5193d92f-f959-4ae4-ac69-a2a2ee468916
수도쿠 풀이 Solve Sudoku Recursion Hard 341 43 41 1c9472c0-e860-44ad-a3b3-bdd147e9e1fd
파도정렬 Sort an array in wave form Sorting Medium 368 19 17 41f35142-0bca-4179-8c1f-19a07e3cf6c6
따라정렬 Sort by Other Array Sorting Medium 396 22 19 ec2d0138-2251-4ad0-89fb-f8992b681b7f
K정렬 Sort K-Sorted Array Sorting Hard 347 19 17 46269132-f273-4733-a5db-50fa0481205f
제곱배열정렬 Sorted Squared Array Arrays Easy 587 53 44 a862eacc-e754-44f6-9b29-338a5a6d6930
나선횡단 Spiral Traverse Arrays Medium 434 50 42 34b99b94-a151-432e-85c1-a52e24402378
Stack Stack Example Other Data Structures Easy 326 12 0 6120b677-0961-47ab-bd2b-0eb5fa63d048
계단여행 II Staircase Traversal Recursion Medium 326 18 14 1a176a1c-3f26-4be8-877b-3f1a0c354ead
계단여행 I Staircase Traversal I Recursion Easy 327 22 18 bc2c5482-ac4b-4904-b059-1558b96d2ad8
부분배열정렬 Subarray Sort Arrays Hard 335 21 20 f38a29fb-f43b-45db-8372-3135c194eed9
합하기 Sum of Linked Lists Linked Lists Easy 310 24 18 abd75a64-992d-4a82-bfb2-0c63ae39f43e
일출보기 Sunset Views Other Data Structures Medium 312 32 20 4d698d3d-a7c3-4bb2-bb09-40c6afdbaa67
탠덤자전거 Tandem Bicycle Greedy Algorithms Easy 327 21 14 a08c025e-1f0c-49ba-8c91-2c32820a9008
할당작업 Task Assignment Greedy Algorithms Medium 362 19 17 66695917-c85c-4897-8877-b49343da22f6
3수정렬 Three Number Sort Sorting Easy 383 14 13 04c471b4-b003-4a5f-a3b9-caed9f13f9d1
3 숫자의 합 Three Number Sum Arrays Medium 670 46 27 3ba62f1f-d106-4eab-bb75-edda5598708a
위상정렬 Topological Sort Sorting Hard 328 23 22 87d8c0ca-766b-41fb-9d9c-4311f7dcbd30
토너먼트 우승자 Tournament Winner Arrays Easy 643 56 53 a17e3f84-08d1-4f65-8977-bbc8134b6277
2 숫자의 합 Two Number Sum Arrays Medium 774 101 93 581cf164-d1b2-45dc-9649-d48b853e69b0
두 문자 합 Two String Sum Strings Medium 326 25 18 c655447c-879f-487b-89f7-ef4c506d7fd3
홀짝정렬 Two Way Sort Sorting Easy 393 16 15 15e4c52e-c3ed-4fb9-a43a-c84e815bbc7f
두엣지연결 그래프 Two-Edge-Connected Graph Graphs Hard 393 22 21 4f52b418-2109-45f3-87d3-881cb94dfa6c
밑줄표시 하위문자열 Underscorify Substring Strings Hard 391 32 31 6ae614dd-7180-4705-9e7f-eb29b8020b1e
유효한 IP주소 Valid IP Addresses Strings Medium 506 53 46 064a9a46-4bec-4d3d-b371-2f6664e4ffed
유효한 출발도시 Valid Starting City Greedy Algorithms Medium 469 40 36 07636303-d81f-4849-87c3-1ccda9e4a163
BST 검사 Validate BST Trees Easy 492 167 165 aed2f3e8-c05e-4619-80cf-4714759dcb14
하위시퀀스 검사 Validate Subsequence Arrays Easy 567 23 20 c82be937-b0d7-4039-b686-1abfe9fcf25e
세노드의 유효성 Validate Three Nodes Trees Hard 326 15 12 8831e62c-87de-48c3-bd45-e4b01b544d3e
물채우기 Water Area Dynamic Programming Medium 275 17 16 d75d31c8-e5a6-4f8f-9d78-897f710c0c7f
폭포수줄기 Waterfall Streams Arrays Hard 333 53 48 b0925547-1edd-456d-b971-c15b7c5b1fec
최연소 공통조상 Youngest Common Ancestor Graphs Medium 291 40 37 77301a83-c9c4-498a-af12-38db2229a0ff
지그재그횡단 Zigzag Traverse Arrays Hard 560 73 58 05c7a405-94e1-423e-acc9-9e7a71856cbc
압축 Zip Linked List Linked Lists Hard 270 28 23 1020e04f-eb20-47f0-a654-f0d6f928d9c2