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Problems

74 problems

Has videoPremium onlyReset
Array566Dynamic Programming328String188Math182Binary Search133Hash Table132Sorting104Greedy102Bit Manipulation101Graph92Depth-First Search88Heap (Priority Queue)77Prefix Sum75Matrix74Breadth-First Search70All topics

Hard · With video · 74 results

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TitleSolutionAcceptDifficultyTopics
37. Sudoku SolverVideo
Solution65.4%Hard
Array, Backtracking +2· 17 companies
85. Maximal RectangleVideo
Solution60.1%Hard
Array, Dynamic Programming +3· 15 companies
174. Dungeon GameVideo
Solution42.2%Hard
Array, Dynamic Programming +1· 8 companies
212. Word Search IIVideo
Solution38.8%Hard
Array, Backtracking +3· 21 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
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
363. Max Sum of Rectangle No Larger Than KVideo
Solution46.0%Hard
Array, Binary Search +3· 3 companies
407. Trapping Rain Water IIVideo
Solution64.0%Hard
Array, Breadth-First Search +2· 14 companies
499. The Maze IIIVideoPremium
Solution52.3%Hard
Array, Breadth-First Search +6· 1 company
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
675. Cut Off Trees for Golf EventVideo
Solution36.8%Hard
Array, Breadth-First Search +2· 2 companies
741. Cherry PickupVideo
Solution40.4%Hard
Array, Dynamic Programming +1· 10 companies
749. Contain VirusVideo
Solution56.5%Hard
Array, Breadth-First Search +3· 3 companies
773. Sliding PuzzleVideo
Solution74.3%Hard
Array, Backtracking +4· 7 companies
778. Swim in Rising WaterVideo
Solution68.3%Hard
Array, Binary Search +5· 8 companies
782. Transform to ChessboardVideo
Solution51.9%Hard
Array, Bit Manipulation +2· 2 companies
803. Bricks Falling When HitVideo
Solution37.7%Hard
Array, Matrix +1· 3 companies
827. Making A Large IslandVideo
Solution57.0%Hard
Array, Breadth-First Search +3· 16 companies
864. Shortest Path to Get All KeysVideo
Solution55.0%Hard
Array, Bit Manipulation +2· 7 companies
980. Unique Paths IIIVideo
Solution82.8%Hard
Array, Backtracking +2· 7 companies
1074. Number of Submatrices That Sum to TargetVideo
Solution74.4%Hard
Array, Hash Table +2· 4 companies
1210. Minimum Moves to Reach Target with RotationsVideo
Solution52.7%Hard
Array, Breadth-First Search +1· 1 company
1263. Minimum Moves to Move a Box to Their Target LocationVideo
Solution49.7%Hard
Array, Breadth-First Search +2· 1 company
1284. Minimum Number of Flips to Convert Binary Matrix to Zero MatrixVideo
Solution72.9%Hard
Array, Bit Manipulation +3· 1 company
1289. Minimum Falling Path Sum IIVideo
Solution63.2%Hard
Array, Dynamic Programming +1· 3 companies
1293. Shortest Path in a Grid with Obstacles EliminationVideo
Solution46.8%Hard
Array, Breadth-First Search +1· 14 companies
1301. Number of Paths with Max ScoreVideo
Solution63.4%Hard
Array, Dynamic Programming +1· 4 companies
1349. Maximum Students Taking ExamVideo
Solution54.8%Hard
Array, Bit Manipulation +3· 3 companies
1368. Minimum Cost to Make at Least One Valid Path in a GridVideo
Solution70.9%Hard
Array, Breadth-First Search +4· 8 companies
1439. Find the Kth Smallest Sum of a Matrix With Sorted RowsVideo
Solution62.6%Hard
Array, Binary Search +2· 2 companies
1444. Number of Ways of Cutting a PizzaVideo
Solution61.8%Hard
Array, Dynamic Programming +2· 1 company
1463. Cherry Pickup IIVideo
Solution72.4%Hard
Array, Dynamic Programming +1· 7 companies
1568. Minimum Number of Days to Disconnect IslandVideo
Solution58.8%Hard
Array, Breadth-First Search +3· 4 companies
1591. Strange Printer IIVideo
Solution61.4%Hard
Array, Graph +2· 1 company
1595. Minimum Cost to Connect Two Groups of PointsVideo
Solution50.9%Hard
Array, Bit Manipulation +3· 1 company
1632. Rank Transform of a MatrixVideo
Solution42.7%Hard
Array, Graph +4· 3 companies
1728. Cat and Mouse IIVideo
Solution40.4%Hard
Array, Dynamic Programming +6· 1 company
1970. Last Day Where You Can Still CrossVideo
Solution68.7%Hard
Array, Binary Search +4· 4 companies
2088. Count Fertile Pyramids in a LandVideo
Solution66.5%Hard
Array, Dynamic Programming +1· 1 company
2123. Minimum Operations to Remove Adjacent Ones in MatrixVideoPremium
Solution42.5%Hard
Array, Graph +1· 1 company
2132. Stamping the GridVideo
Solution36.3%Hard
Array, Greedy +2· 1 company
2258. Escape the Spreading FireVideo
Solution39.7%Hard
Array, Binary Search +2· 4 companies
2267. Check if There Is a Valid Parentheses String PathVideo
Solution57.2%Hard
Array, Dynamic Programming +1· 1 company
2290. Minimum Obstacle Removal to Reach CornerVideo
Solution71.1%Hard
Array, Breadth-First Search +4· 2 companies
2328. Number of Increasing Paths in a GridVideo
Solution57.4%Hard
Array, Breadth-First Search +6· 2 companies
2371. Minimize Maximum Value in a GridVideoPremium
Solution70.1%Hard
Array, Graph +4· 1 company
2392. Build a Matrix With ConditionsVideo
Solution79.5%Hard
Array, Graph +2· 1 company
Showing 1–50 of 74