Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1561 | Longest Team Pass Streak | Hard | Database |
| 1562 | Longest Turbulent Subarray | Medium | ArrayDynamic ProgrammingSliding Window |
| 1563 | Longest Uncommon Subsequence I | Easy | String |
| 1564 | Longest Uncommon Subsequence II | Medium | ArrayHash TableTwo Pointers |
| 1565 | Longest Unequal Adjacent Groups Subsequence I | Easy | ArrayStringDynamic Programming |
| 1566 | Longest Unequal Adjacent Groups Subsequence II | Medium | ArrayStringDynamic Programming |
| 1567 | Longest Univalue Path | Medium | TreeDepth-First SearchBinary Tree |
| 1568 | Longest Uploaded Prefix | Medium | Hash TableBinary SearchUnion Find |
| 1569 | Longest Valid Parentheses | Hard | StringDynamic ProgrammingStack |
| 1570 | Longest Well-Performing Interval | Medium | ArrayHash TableStack |
| 1571 | Longest Winning Streak | Hard | DatabaseHash TableSliding Window |
| 1572 | Longest Word in Dictionary | Medium | ArrayHash TableString |
| 1573 | Longest Word in Dictionary through Deleting | Medium | ArrayTwo PointersString |
| 1574 | Longest Word With All Prefixes | Medium | ArrayStringDepth-First Search |
| 1575 | Longest ZigZag Path in a Binary Tree | Medium | Dynamic ProgrammingTreeDepth-First Search |
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