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2,209 problems

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Array2,209 String870 Hash Table786 Math682 Dynamic Programming666 Sorting504 Greedy480 Binary Search352 Depth-First Search335 Database303 Bit Manipulation283 Matrix278 Tree261 Breadth-First Search255 Two Pointers249 All topics

With video · 2,209 results

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TitleSolutionAcceptDifficultyTopics

1. Two SumVideo

Solution57.8%Easy

Array, Hash Table· 127 companies

4. Median of Two Sorted ArraysVideo

Solution47.9%Hard

Array, Binary Search +1· 45 companies

11. Container With Most WaterVideo

Solution60.9%Medium

Array, Greedy +1· 57 companies

15. 3SumVideo

Solution40.1%Medium

Array, Sorting +1· 57 companies

16. 3Sum ClosestVideo

Solution47.4%Medium

Array, Sorting +1· 11 companies

18. 4SumVideo

Solution42.0%Medium

Array, Sorting +1· 20 companies

26. Remove Duplicates from Sorted ArrayVideo

Solution63.7%Easy

Array, Two Pointers· 26 companies

27. Remove ElementVideo

Solution62.2%Easy

Array, Two Pointers· 10 companies

31. Next PermutationVideo

Solution46.1%Medium

Array, Two Pointers· 31 companies

33. Search in Rotated Sorted ArrayVideo

Solution45.5%Medium

Array, Binary Search· 53 companies

34. Find First and Last Position of Element in Sorted ArrayVideo

Solution49.7%Medium

Array, Binary Search· 29 companies

35. Search Insert PositionVideo

Solution52.1%Easy

Array, Binary Search· 12 companies

36. Valid SudokuVideo

Solution64.9%Medium

Array, Hash Table +1· 26 companies

37. Sudoku SolverVideo

Solution65.4%Hard

Array, Backtracking +2· 17 companies

39. Combination SumVideo

Solution76.9%Medium

Array, Backtracking· 26 companies

40. Combination Sum IIVideo

Solution60.3%Medium

Array, Backtracking· 15 companies

41. First Missing PositiveVideo

Solution43.8%Hard

Array, Hash Table· 33 companies

42. Trapping Rain WaterVideo

Solution68.2%Hard

Array, Dynamic Programming +3· 73 companies

45. Jump Game IIVideo

Solution43.2%Medium

Array, Dynamic Programming +1· 26 companies

46. PermutationsVideo

Solution82.3%Medium

Array, Backtracking· 25 companies

47. Permutations IIVideo

Solution64.3%Medium

Array, Backtracking· 9 companies

48. Rotate ImageVideo

Solution80.7%Medium

Array, Math +1· 36 companies

49. Group AnagramsVideo

Solution73.0%Medium

Array, Hash Table +2· 87 companies

51. N-QueensVideo

Solution76.3%Hard

Array, Backtracking· 16 companies

53. Maximum SubarrayVideo

Solution53.7%Medium

Array, Divide and Conquer +1· 64 companies

54. Spiral MatrixVideo

Solution58.2%Medium

Array, Matrix +1· 49 companies

55. Jump GameVideo

Solution41.2%Medium

Array, Dynamic Programming +1· 33 companies

56. Merge IntervalsVideo

Solution52.6%Medium

Array, Sorting· 112 companies

57. Insert IntervalVideo

Solution46.1%Medium

Array· 16 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

66. Plus OneVideo

Solution50.3%Easy

Array, Math· 13 companies

68. Text JustificationVideo

Solution52.4%Hard

Array, Simulation +1· 44 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

75. Sort ColorsVideo

Solution69.9%Medium

Array, Sorting +1· 37 companies

78. SubsetsVideo

Solution82.7%Medium

Array, Backtracking +1· 21 companies

79. Word SearchVideo

Solution48.2%Medium

Array, Backtracking +2· 36 companies

80. Remove Duplicates from Sorted Array IIVideo

Solution65.0%Medium

Array, Two Pointers· 9 companies

81. Search in Rotated Sorted Array IIVideo

Solution40.4%Medium

Array, Binary Search· 10 companies

84. Largest Rectangle in HistogramVideo

Solution50.7%Hard

Array, Monotonic Stack +1· 30 companies

85. Maximal RectangleVideo

Solution60.1%Hard

Array, Dynamic Programming +3· 15 companies

88. Merge Sorted ArrayVideo

Solution55.7%Easy

Array, Sorting +1· 37 companies

90. Subsets IIVideo

Solution61.7%Medium

Array, Backtracking +1· 9 companies

105. Construct Binary Tree from Preorder and Inorder TraversalVideo

Solution69.7%Medium

Array, Binary Tree +3· 9 companies

106. Construct Binary Tree from Inorder and Postorder TraversalVideo

Solution69.4%Medium

Array, Binary Tree +3· 7 companies

108. Convert Sorted Array to Binary Search TreeVideo

Solution75.9%Easy

Array, Binary Search Tree +3· 9 companies

118. Pascal's TriangleVideo

Solution79.4%Easy

Array, Dynamic Programming· 17 companies

119. Pascal's Triangle IIVideo

Solution67.8%Easy

Array, Dynamic Programming· 6 companies

Showing 1–50 of 2,209