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28 problems

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Array194 Database104 Hash Table83 String71 Depth-First Search57 Dynamic Programming49 Tree48 Math45 Sorting43 Breadth-First Search40 Greedy40 Binary Tree38 Binary Search31 Two Pointers29 Matrix28 All topics

Medium · Premium · 28 results

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TitleSolutionAcceptDifficultyTopics

286. Walls and GatesVideoPremium

Solution63.9%Medium

Array, Breadth-First Search +1· 11 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

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

490. The MazeVideoPremium

Solution60.4%Medium

Array, Breadth-First Search +2· 13 companies

505. The Maze IIVideoPremium

Solution55.0%Medium

Array, Breadth-First Search +5· 5 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

562. Longest Line of Consecutive One in MatrixVideoPremium

Solution50.5%Medium

Array, Dynamic Programming +1· 1 company

723. Candy CrushVideoPremium

Solution77.6%Medium

Array, Matrix +2· 11 companies

750. Number Of Corner RectanglesVideoPremium

Solution67.8%Medium

Array, Dynamic Programming +2· 1 company

1102. Path With Maximum Minimum ValueVideoPremium

Solution54.6%Medium

Array, Binary Search +5· 3 companies

1198. Find Smallest Common Element in All RowsVideoPremium

Solution76.5%Medium

Array, Binary Search +3· 2 companies

1428. Leftmost Column with at Least a OneVideoPremium

Solution55.3%Medium

Array, Binary Search +2· 3 companies

1730. Shortest Path to Get FoodVideoPremium

Solution57.7%Medium

Array, Breadth-First Search +1· 2 companies

1820. Maximum Number of Accepted InvitationsVideoPremium

Solution52.4%Medium

Array, Depth-First Search +2· 2 companies

2061. Number of Spaces Cleaning Robot CleanedVideoPremium

Solution64.3%Medium

Array, Matrix +1· 2 companies

2128. Remove All Ones With Row and Column FlipsVideoPremium

Solution76.2%Medium

Array, Bit Manipulation +2· 1 company

2174. Remove All Ones With Row and Column Flips IIVideoPremium

Solution67.2%Medium

Array, Bit Manipulation +2· 1 company

2282. Number of People That Can Be Seen in a GridVideoPremium

Solution46.8%Medium

Array, Matrix +2· 1 company

2387. Median of a Row Wise Sorted MatrixVideoPremium

Solution70.9%Medium

Array, Binary Search +1· 1 company

2510. Check if There is a Path With Equal Number of 0's And 1'sVideoPremium

Solution51.9%Medium

Array, Dynamic Programming +1· 1 company

2664. The Knight’s TourVideoPremium

Solution72.7%Medium

Array, Backtracking +1· 1 company

2852. Sum of Remoteness of All CellsVideoPremium

Solution70.8%Medium

Array, Breadth-First Search +4· 1 company

3078. Match Alphanumerical Pattern in Matrix IVideoPremium

Solution64.6%Medium

Array, Hash Table +2· 2 companies

3391. Design a 3D Binary Matrix with Efficient Layer TrackingVideoPremium

Solution66.1%Medium

Array, Design +4· 1 company

3565. Sequential Grid Path CoverVideoPremium

Solution59.5%Medium

Array, Matrix +1

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