Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1681 | Longest Uncommon Subsequence I | Easy | String |
| 1682 | Longest Uncommon Subsequence II | Medium | ArrayHash TableTwo Pointers |
| 1683 | Longest Unequal Adjacent Groups Subsequence I | Easy | ArrayStringDynamic Programming |
| 1684 | Longest Unequal Adjacent Groups Subsequence II | Medium | ArrayStringDynamic Programming |
| 1685 | Longest Univalue Path | Medium | TreeDepth-First SearchBinary Tree |
| 1686 | Longest Uploaded Prefix | Medium | Hash TableBinary SearchUnion Find |
| 1687 | Longest Valid Parentheses | Hard | StringDynamic ProgrammingStack |
| 1688 | Longest Well-Performing Interval | Medium | ArrayHash TableStack |
| 1689 | Longest Winning Streak | Hard | DatabaseHash TableSliding Window |
| 1690 | Longest Word in Dictionary | Medium | ArrayHash TableString |
| 1691 | Longest Word in Dictionary through Deleting | Medium | ArrayTwo PointersString |
| 1692 | Longest Word With All Prefixes | Medium | ArrayStringDepth-First Search |
| 1693 | Longest ZigZag Path in a Binary Tree | Medium | Dynamic ProgrammingTreeDepth-First Search |
| 1694 | Loud and Rich | Medium | ArrayDepth-First SearchGraph |
| 1695 | Low-Quality Problems | Easy | Database |
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