Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1771 | Longest Cycle in a Graph | Hard | Depth-First SearchBreadth-First SearchGraph |
| 1772 | Longest Duplicate Substring | Hard | StringBinary SearchSliding Window |
| 1773 | Longest Even Odd Subarray With Threshold | Easy | ArraySliding Window |
| 1774 | Longest Happy Prefix | Hard | StringRolling HashString Matching |
| 1775 | Longest Happy String | Medium | StringGreedyHeap (Priority Queue) |
| 1776 | Longest Harmonious Subsequence | Easy | ArrayHash TableSliding Window |
| 1777 | Longest Ideal Subsequence | Medium | Hash TableStringDynamic Programming |
| 1778 | Longest Increasing Path in a Matrix | Hard | ArrayDynamic ProgrammingDepth-First Search |
| 1779 | Longest Increasing Subsequence | Medium | ArrayBinary SearchDynamic Programming |
| 1780 | Longest Increasing Subsequence II | Hard | ArrayDivide and ConquerDynamic Programming |
| 1781 | Longest Line of Consecutive One in Matrix | Medium | ArrayDynamic ProgrammingMatrix |
| 1782 | Longest Mountain in Array | Medium | ArrayTwo PointersDynamic Programming |
| 1783 | Longest Nice Subarray | Medium | ArrayBit ManipulationSliding Window |
| 1784 | Longest Nice Substring | Easy | Hash TableStringDivide and Conquer |
| 1785 | Longest Non-decreasing Subarray From Two Arrays | Medium | ArrayDynamic Programming |
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