Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1636 | Remove Sub-Folders from the Filesystem | Medium | ArrayStringDepth-First Search |
| 1637 | Removing Minimum and Maximum From Array | Medium | ArrayGreedy |
| 1638 | Removing Minimum Number of Magic Beans | Medium | ArrayGreedySorting |
| 1639 | Reorder Data in Log Files | Medium | ArrayStringSorting |
| 1640 | Replace Elements in an Array | Medium | ArrayHash TableSimulation |
| 1641 | Replace Elements with Greatest Element on Right Side | Easy | Array |
| 1642 | Replace Non-Coprime Numbers in Array | Hard | ArrayMathStack |
| 1643 | Replace Words | Medium | ArrayHash TableString |
| 1644 | Report Spam Message | Medium | ArrayHash TableString |
| 1645 | Reschedule Meetings for Maximum Free Time I | Medium | ArrayGreedySliding Window |
| 1646 | Reschedule Meetings for Maximum Free Time II | Medium | ArrayGreedyEnumeration |
| 1647 | Reshape the Matrix | Easy | ArrayMatrixSimulation |
| 1648 | Restore the Array From Adjacent Pairs | Medium | ArrayHash TableDepth-First Search |
| 1649 | Reveal Cards In Increasing Order | Medium | ArrayQueueSorting |
| 1650 | Reverse Pairs | Hard | ArrayBinary SearchDivide and Conquer |
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