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Problems

301 problems

Has videoPremium onlyReset
Array301Database212Hash Table116String116Depth-First Search78Math78Dynamic Programming76Sorting64Tree63Breadth-First Search53Greedy52Binary Search50Binary Tree48Two Pointers40Matrix39All topics

Premium · 301 results

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TitleSolutionAcceptDifficultyTopics
157. Read N Characters Given Read4VideoPremium
Solution42.5%Easy
Array, Interactive +1· 3 companies
158. Read N Characters Given read4 II - Call Multiple TimesVideoPremium
Solution43.2%Hard
Array, Interactive +1· 5 companies
163. Missing RangesVideoPremium
Solution35.5%Easy
Array· 2 companies
170. Two Sum III - Data structure designVideoPremium
Solution39.1%Easy
Array, Data Stream +3· 2 companies
243. Shortest Word DistanceVideoPremium
Solution66.3%Easy
Array, String· 8 companies
244. Shortest Word Distance IIVideoPremium
Solution62.8%Medium
Array, Design +3· 4 companies
245. Shortest Word Distance IIIVideoPremium
Solution59.4%Medium
Array, String· 2 companies
247. Strobogrammatic Number IIVideoPremium
Solution53.5%Medium
Array, Recursion +1· 2 companies
248. Strobogrammatic Number IIIVideoPremium
Solution42.3%Hard
Array, Recursion +1
249. Group Shifted StringsVideoPremium
Solution67.8%Medium
Array, Hash Table +1· 4 companies
251. Flatten 2D VectorVideoPremium
Solution50.5%Medium
Array, Design +2· 4 companies
252. Meeting RoomsVideoPremium
Solution59.4%Easy
Array, Sorting· 10 companies
253. Meeting Rooms IIVideoPremium
Solution52.6%Medium
Array, Greedy +4· 42 companies
255. Verify Preorder Sequence in Binary Search TreeVideoPremium
Solution51.7%Medium
Array, Binary Search Tree +5· 5 companies
256. Paint HouseVideoPremium
Solution64.3%Medium
Array, Dynamic Programming· 8 companies
259. 3Sum SmallerVideoPremium
Solution51.4%Medium
Array, Binary Search +2· 7 companies
265. Paint House IIVideoPremium
Solution57.0%Hard
Array, Dynamic Programming· 2 companies
269. Alien DictionaryVideoPremium
Solution37.1%Hard
Array, Breadth-First Search +4· 18 companies
271. Encode and Decode StringsVideoPremium
Solution51.9%Medium
Array, Design +1· 11 companies
280. Wiggle SortVideoPremium
Solution68.5%Medium
Array, Greedy +1· 4 companies
281. Zigzag IteratorVideoPremium
Solution67.1%Medium
Array, Design +2· 5 companies
286. Walls and GatesVideoPremium
Solution63.9%Medium
Array, Breadth-First Search +1· 11 companies
288. Unique Word AbbreviationVideoPremium
Solution28.1%Medium
Array, Design +2· 1 company
296. Best Meeting PointVideoPremium
Solution61.1%Hard
Array, Math +2· 9 companies
302. Smallest Rectangle Enclosing Black PixelsVideoPremium
Solution60.9%Hard
Array, Binary Search +3· 1 company
305. Number of Islands IIVideoPremium
Solution40.5%Hard
Array, Hash Table +1· 10 companies
308. Range Sum Query 2D - MutableVideoPremium
Solution46.0%Medium
Array, Binary Indexed Tree +3· 3 companies
311. Sparse Matrix MultiplicationVideoPremium
Solution69.3%Medium
Array, Hash Table +1· 9 companies
317. Shortest Distance from All BuildingsVideoPremium
Solution44.9%Hard
Array, Breadth-First Search +1· 15 companies
325. Maximum Size Subarray Sum Equals kVideoPremium
Solution50.8%Medium
Array, Hash Table +1· 8 companies
346. Moving Average from Data StreamVideoPremium
Solution80.2%Easy
Array, Data Stream +2· 11 companies
348. Design Tic-Tac-ToeVideoPremium
Solution58.8%Medium
Array, Design +3· 13 companies
353. Design Snake GameVideoPremium
Solution40.0%Medium
Array, Design +3· 10 companies
356. Line ReflectionVideoPremium
Solution36.3%Medium
Array, Hash Table +1· 2 companies
360. Sort Transformed ArrayVideoPremium
Solution58.0%Medium
Array, Math +2· 3 companies
361. Bomb EnemyVideoPremium
Solution52.8%Medium
Array, Dynamic Programming +1· 2 companies
362. Design Hit CounterVideoPremium
Solution69.6%Medium
Array, Binary Search +3· 25 companies
370. Range AdditionVideoPremium
Solution73.0%Medium
Array, Prefix Sum· 2 companies
379. Design Phone DirectoryVideoPremium
Solution53.3%Medium
Array, Design +3· 1 company
411. Minimum Unique Word AbbreviationVideoPremium
–40.5%Hard
Array, Backtracking +2· 2 companies
418. Sentence Screen FittingVideoPremium
Solution36.3%Medium
Array, Dynamic Programming +1· 1 company
422. Valid Word SquareVideoPremium
Solution42.9%Easy
Array, Matrix· 1 company
425. Word SquaresVideoPremium
Solution54.7%Hard
Array, Backtracking +2· 1 company
444. Sequence ReconstructionVideoPremium
Solution31.2%Medium
Array, Graph +1· 2 companies
465. Optimal Account BalancingVideoPremium
Solution50.9%Hard
Array, Backtracking +3· 12 companies
469. Convex PolygonVideoPremium
Solution40.3%Medium
Array, Geometry +1· 1 company
484. Find PermutationVideoPremium
Solution67.0%Medium
Array, Greedy +2· 1 company
487. Max Consecutive Ones IIVideoPremium
Solution52.0%Medium
Array, Dynamic Programming +1· 4 companies
490. The MazeVideoPremium
Solution60.4%Medium
Array, Breadth-First Search +2· 13 companies
499. The Maze IIIVideoPremium
Solution52.3%Hard
Array, Breadth-First Search +6· 1 company
Showing 1–50 of 301