Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1291 | Longest Common Subsequence Between Sorted Arrays | Medium | ArrayHash TableCounting |
| 1292 | Longest Common Suffix Queries | Hard | ArrayStringTrie |
| 1293 | Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium | ArrayQueueSliding Window |
| 1294 | Longest Cycle in a Graph | Hard | Depth-First SearchBreadth-First SearchGraph |
| 1295 | Longest Duplicate Substring | Hard | StringBinary SearchSliding Window |
| 1296 | Longest Even Odd Subarray With Threshold | Easy | ArraySliding Window |
| 1297 | Longest Happy String | Medium | StringGreedyHeap (Priority Queue) |
| 1298 | Longest Harmonious Subsequence | Easy | ArrayHash TableSliding Window |
| 1299 | Longest Ideal Subsequence | Medium | Hash TableStringDynamic Programming |
| 1300 | Longest Increasing Path in a Matrix | Hard | ArrayDynamic ProgrammingDepth-First Search |
| 1301 | Longest Increasing Subsequence | Medium | ArrayBinary SearchDynamic Programming |
| 1302 | Longest Increasing Subsequence II | Hard | ArrayDivide and ConquerDynamic Programming |
| 1303 | Longest Nice Subarray | Medium | ArrayBit ManipulationSliding Window |
| 1304 | Longest Non-decreasing Subarray From Two Arrays | Medium | ArrayDynamic Programming |
| 1305 | Longest Palindrome | Easy | Hash TableStringGreedy |
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