Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1621 | Reward Top K Students | Medium | ArrayHash TableString |
| 1622 | Richest Customer Wealth | Easy | ArrayMatrix |
| 1623 | Right Triangles | Medium | ArrayHash TableMath |
| 1624 | RLE Iterator | Medium | ArrayDesignCounting |
| 1625 | Robot Collisions | Hard | ArrayStackSorting |
| 1626 | Rotate Array | Medium | ArrayMathTwo Pointers |
| 1627 | Rotate Function | Medium | ArrayMathDynamic Programming |
| 1628 | Rotate Image | Medium | ArrayMathMatrix |
| 1629 | Rotating the Box | Medium | ArrayTwo PointersMatrix |
| 1630 | Rotting Oranges | Medium | ArrayBreadth-First SearchMatrix |
| 1631 | Row With Maximum Ones | Easy | ArrayMatrix |
| 1632 | Running Sum of 1d Array | Easy | ArrayPrefix Sum |
| 1633 | Russian Doll Envelopes | Hard | ArrayBinary SearchDynamic Programming |
| 1634 | Satisfiability of Equality Equations | Medium | ArrayStringUnion Find |
| 1635 | Score After Flipping Matrix | Medium | ArrayGreedyBit Manipulation |
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