Practice problems across 75+ categories
Practice problems frequently asked at Matrix • 260 problems | 38 Easy | 152 Medium | 68 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 76 | Find the Safest Path in a Grid | Medium | ArrayBinary SearchBreadth-First Search |
| 77 | Find the String with LCP | Hard | ArrayStringDynamic Programming |
| 78 | Find the Width of Columns of a Grid | Easy | ArrayMatrix |
| 79 | Find Valid Matrix Given Row and Column Sums | Medium | ArrayGreedyMatrix |
| 80 | Find Winner on a Tic Tac Toe Game | Easy | ArrayHash TableMatrix |
| 81 | First Completely Painted Row or Column | Medium | ArrayHash TableMatrix |
| 82 | Flip Columns For Maximum Number of Equal Rows | Medium | ArrayHash TableMatrix |
| 83 | Flipping an Image | Easy | ArrayTwo PointersBit Manipulation |
| 84 | Flood Fill | Easy | ArrayDepth-First SearchBreadth-First Search |
| 85 | Floyd-Warshall All Pairs | Hard | Advanced GraphsGraphDP |
| 86 | Game of Life | Medium | ArrayMatrixSimulation |
| 87 | Get Biggest Three Rhombus Sums in a Grid | Medium | ArrayMathSorting |
| 88 | Grid Game | Medium | ArrayMatrixPrefix Sum |
| 89 | Grid Teleportation Traversal | Medium | ArrayHash TableBreadth-First Search |
| 90 | Image Overlap | Medium | ArrayMatrix |
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