Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1846 | The k Strongest Values in an Array | Medium | ArrayTwo PointersSorting |
| 1847 | The K Weakest Rows in a Matrix | Easy | ArrayBinary SearchSorting |
| 1848 | The Knight's Tour | Medium | ArrayBacktrackingMatrix |
| 1849 | The Latest Time to Catch a Bus | Medium | ArrayTwo PointersBinary Search |
| 1850 | The Maze | Medium | ArrayDepth-First SearchBreadth-First Search |
| 1851 | The Maze II | Medium | ArrayDepth-First SearchBreadth-First Search |
| 1852 | The Maze III | Hard | ArrayStringDepth-First Search |
| 1853 | The Number of Beautiful Subsets | Medium | ArrayHash TableMath |
| 1854 | The Number of Good Subsets | Hard | ArrayHash TableMath |
| 1855 | The Number of the Smallest Unoccupied Chair | Medium | ArrayHash TableHeap (Priority Queue) |
| 1856 | The Number of Ways to Make the Sum | Medium | ArrayDynamic Programming |
| 1857 | The Number of Weak Characters in the Game | Medium | ArrayStackGreedy |
| 1858 | The Score of Students Solving Math Expression | Hard | ArrayHash TableMath |
| 1859 | The Skyline Problem | Hard | ArrayDivide and ConquerBinary Indexed Tree |
| 1860 | The Time When the Network Becomes Idle | Medium | ArrayBreadth-First SearchGraph |
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