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Problems

279 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

279 results

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TitleSolutionAcceptDifficultyTopics
36. Valid SudokuVideo
Solution64.9%Medium
Array, Hash Table +1· 26 companies
37. Sudoku SolverVideo
Solution65.4%Hard
Array, Backtracking +2· 17 companies
48. Rotate ImageVideo
Solution80.7%Medium
Array, Math +1· 36 companies
54. Spiral MatrixVideo
Solution58.2%Medium
Array, Matrix +1· 49 companies
59. Spiral Matrix IIVideo
Solution76.0%Medium
Array, Matrix +1· 11 companies
63. Unique Paths IIVideo
Solution44.9%Medium
Array, Dynamic Programming +1· 9 companies
64. Minimum Path SumVideo
Solution68.6%Medium
Array, Dynamic Programming +1· 17 companies
73. Set Matrix ZeroesVideo
Solution63.8%Medium
Array, Hash Table +1· 22 companies
74. Search a 2D MatrixVideo
Solution54.4%Medium
Array, Binary Search +1· 19 companies
79. Word SearchVideo
Solution48.2%Medium
Array, Backtracking +2· 36 companies
85. Maximal RectangleVideo
Solution60.1%Hard
Array, Dynamic Programming +3· 15 companies
130. Surrounded RegionsVideo
Solution46.1%Medium
Array, Breadth-First Search +3· 12 companies
174. Dungeon GameVideo
Solution42.2%Hard
Array, Dynamic Programming +1· 8 companies
200. Number of IslandsVideo
Solution65.2%Medium
Array, Breadth-First Search +3· 86 companies
212. Word Search IIVideo
Solution38.8%Hard
Array, Backtracking +3· 21 companies
221. Maximal SquareVideo
Solution50.7%Medium
Array, Dynamic Programming +1· 28 companies
240. Search a 2D Matrix IIVideo
Solution58.2%Medium
Array, Binary Search +2· 16 companies
286. Walls and GatesVideoPremium
Solution63.9%Medium
Array, Breadth-First Search +1· 11 companies
289. Game of LifeVideo
Solution73.0%Medium
Array, Matrix +1· 15 companies
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
304. Range Sum Query 2D - ImmutableVideo
Solution59.2%Medium
Array, Design +2· 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
329. Longest Increasing Path in a MatrixVideo
Solution57.0%Hard
Array, Breadth-First Search +6· 16 companies
348. Design Tic-Tac-ToeVideoPremium
Solution58.8%Medium
Array, Design +3· 13 companies
361. Bomb EnemyVideoPremium
Solution52.8%Medium
Array, Dynamic Programming +1· 2 companies
363. Max Sum of Rectangle No Larger Than KVideo
Solution46.0%Hard
Array, Binary Search +3· 3 companies
378. Kth Smallest Element in a Sorted MatrixVideo
Solution65.1%Medium
Array, Binary Search +3· 10 companies
407. Trapping Rain Water IIVideo
Solution64.0%Hard
Array, Breadth-First Search +2· 14 companies
417. Pacific Atlantic Water FlowVideo
Solution61.3%Medium
Array, Breadth-First Search +2· 11 companies
419. Battleships in a BoardVideo
Solution77.4%Medium
Array, Depth-First Search +1· 8 companies
422. Valid Word SquareVideoPremium
Solution42.9%Easy
Array, Matrix· 1 company
427. Construct Quad TreeVideo
Solution78.8%Medium
Array, Divide and Conquer +2· 8 companies
463. Island PerimeterVideo
Solution74.3%Easy
Array, Breadth-First Search +2· 9 companies
490. The MazeVideoPremium
Solution60.4%Medium
Array, Breadth-First Search +2· 13 companies
498. Diagonal TraverseVideo
Solution67.1%Medium
Array, Matrix +1· 12 companies
499. The Maze IIIVideoPremium
Solution52.3%Hard
Array, Breadth-First Search +6· 1 company
505. The Maze IIVideoPremium
Solution55.0%Medium
Array, Breadth-First Search +5· 5 companies
529. MinesweeperVideo
Solution68.7%Medium
Array, Breadth-First Search +2· 9 companies
531. Lonely Pixel IVideoPremium
Solution62.3%Medium
Array, Hash Table +1· 1 company
533. Lonely Pixel IIVideoPremium
Solution48.7%Medium
Array, Hash Table +1· 1 company
542. 01 MatrixVideo
Solution54.7%Medium
Array, Breadth-First Search +2· 14 companies
562. Longest Line of Consecutive One in MatrixVideoPremium
Solution50.5%Medium
Array, Dynamic Programming +1· 1 company
566. Reshape the MatrixVideo
Solution65.4%Easy
Array, Matrix +1· 5 companies
568. Maximum Vacation DaysVideoPremium
Solution46.7%Hard
Array, Dynamic Programming +1· 3 companies
631. Design Excel Sum FormulaVideoPremium
–39.3%Hard
Array, Design +3· 9 companies
661. Image SmootherVideo
Solution69.8%Easy
Array, Matrix· 6 companies
675. Cut Off Trees for Golf EventVideo
Solution36.8%Hard
Array, Breadth-First Search +2· 2 companies
Showing 1–50 of 279