Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1651 | Sentence Similarity II | Medium | ArrayHash TableString |
| 1652 | Sentence Similarity III | Medium | ArrayTwo PointersString |
| 1653 | Separate Squares I | Medium | ArrayBinary Search |
| 1654 | Separate Squares II | Hard | ArrayBinary SearchSegment Tree |
| 1655 | Separate the Digits in an Array | Easy | ArraySimulation |
| 1656 | Sequence Reconstruction | Medium | ArrayGraphTopological Sort |
| 1657 | Sequential Grid Path Cover | Medium | ArrayRecursionMatrix |
| 1658 | Set Intersection Size At Least Two | Hard | ArrayGreedySorting |
| 1659 | Set Matrix Zeroes | Medium | ArrayHash TableMatrix |
| 1660 | Set Mismatch | Easy | ArrayHash TableBit Manipulation |
| 1661 | Shift 2D Grid | Easy | ArrayMatrixSimulation |
| 1662 | Shift Distance Between Two Strings | Medium | ArrayStringPrefix Sum |
| 1663 | Shifting Letters | Medium | ArrayStringPrefix Sum |
| 1664 | Shifting Letters II | Medium | ArrayStringPrefix Sum |
| 1665 | Shopping Offers | Medium | ArrayDynamic ProgrammingBacktracking |
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