Practice problems across 75+ categories
Practice problems frequently asked at Ordered Set • 72 problems | 3 Easy | 27 Medium | 42 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 46 | Maximum Strictly Increasing Cells in a Matrix | Hard | ArrayHash TableBinary Search |
| 47 | Merge Similar Items | Easy | ArrayHash TableSorting |
| 48 | Minimize Deviation in Array | Hard | ArrayGreedyHeap (Priority Queue) |
| 49 | Minimize Manhattan Distances | Hard | ArrayMathGeometry |
| 50 | Minimum Absolute Difference Between Elements With Constraint | Medium | ArrayBinary SearchOrdered Set |
| 51 | Minimum Absolute Sum Difference | Medium | ArrayBinary SearchSorting |
| 52 | Minimum Pair Removal to Sort Array I | Easy | ArrayHash TableLinked List |
| 53 | Minimum Pair Removal to Sort Array II | Hard | ArrayHash TableLinked List |
| 54 | Minimum Reverse Operations | Hard | ArrayHash TableBreadth-First Search |
| 55 | Most Frequent IDs | Medium | ArrayHash TableHeap (Priority Queue) |
| 56 | My Calendar I | Medium | ArrayBinary SearchDesign |
| 57 | My Calendar II | Medium | ArrayBinary SearchDesign |
| 58 | My Calendar III | Hard | Binary SearchDesignSegment Tree |
| 59 | Number of Flowers in Full Bloom | Hard | ArrayHash TableBinary Search |
| 60 | Number of Pairs Satisfying Inequality | Hard | ArrayBinary SearchDivide and Conquer |
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