Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1576 | Longest Winning Streak | Hard | DatabaseHash TableSliding Window |
| 1577 | Longest Word in Dictionary | Medium | ArrayHash TableString |
| 1578 | Longest Word in Dictionary through Deleting | Medium | ArrayTwo PointersString |
| 1579 | Longest Word With All Prefixes | Medium | ArrayStringDepth-First Search |
| 1580 | Longest ZigZag Path in a Binary Tree | Medium | Dynamic ProgrammingTreeDepth-First Search |
| 1581 | Loud and Rich | Medium | ArrayDepth-First SearchGraph |
| 1582 | Low-Quality Problems | Easy | Database |
| 1583 | Lowest Common Ancestor of a Binary Search Tree | Medium | TreeDepth-First SearchBinary Search Tree |
| 1584 | Lowest Common Ancestor of a Binary Tree | Medium | TreeDepth-First SearchBinary Tree |
| 1585 | Lowest Common Ancestor of a Binary Tree II | Medium | TreeDepth-First SearchBinary Tree |
| 1586 | Lowest Common Ancestor of a Binary Tree III | Medium | Hash TableTwo PointersTree |
| 1587 | Lowest Common Ancestor of a Binary Tree IV | Medium | Hash TableTreeDepth-First Search |
| 1588 | Lowest Common Ancestor of Deepest Leaves | Medium | Hash TableTreeDepth-First Search |
| 1589 | LRU Cache | Medium | Hash TableLinked ListDesign |
| 1590 | Lucky Numbers in a Matrix | Easy | ArrayMatrix |
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