Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 811 | Longest Common Prefix of K Strings After Removal | Hard | ArrayStringTrie |
| 812 | Longest Common Subpath | Hard | ArrayBinary SearchRolling Hash |
| 813 | Longest Common Subsequence Between Sorted Arrays | Medium | ArrayHash TableCounting |
| 814 | Longest Common Suffix Queries | Hard | ArrayStringTrie |
| 815 | Longest Consecutive Sequence | Medium | ArrayHash TableUnion Find |
| 816 | Longest Continuous Increasing Subsequence | Easy | Array |
| 817 | Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium | ArrayQueueSliding Window |
| 818 | Longest Even Odd Subarray With Threshold | Easy | ArraySliding Window |
| 819 | Longest Harmonious Subsequence | Easy | ArrayHash TableSliding Window |
| 820 | Longest Increasing Path in a Matrix | Hard | ArrayDynamic ProgrammingDepth-First Search |
| 821 | Longest Increasing Subsequence | Medium | ArrayBinary SearchDynamic Programming |
| 822 | Longest Increasing Subsequence II | Hard | ArrayDivide and ConquerDynamic Programming |
| 823 | Longest Line of Consecutive One in Matrix | Medium | ArrayDynamic ProgrammingMatrix |
| 824 | Longest Mountain in Array | Medium | ArrayTwo PointersDynamic Programming |
| 825 | Longest Nice Subarray | Medium | ArrayBit ManipulationSliding Window |
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