Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1576 | Loud and Rich | Medium | ArrayDepth-First SearchGraph |
| 1577 | Low-Quality Problems | Easy | Database |
| 1578 | Lowest Common Ancestor of a Binary Search Tree | Medium | TreeDepth-First SearchBinary Search Tree |
| 1579 | Lowest Common Ancestor of a Binary Tree | Medium | TreeDepth-First SearchBinary Tree |
| 1580 | Lowest Common Ancestor of a Binary Tree II | Medium | TreeDepth-First SearchBinary Tree |
| 1581 | Lowest Common Ancestor of a Binary Tree III | Medium | Hash TableTwo PointersTree |
| 1582 | Lowest Common Ancestor of a Binary Tree IV | Medium | Hash TableTreeDepth-First Search |
| 1583 | Lowest Common Ancestor of Deepest Leaves | Medium | Hash TableTreeDepth-First Search |
| 1584 | LRU Cache | Medium | Hash TableLinked ListDesign |
| 1585 | Lucky Numbers in a Matrix | Easy | ArrayMatrix |
| 1586 | Magic Squares In Grid | Medium | ArrayHash TableMath |
| 1587 | Magical String | Medium | Two PointersString |
| 1588 | Magnetic Force Between Two Balls | Medium | ArrayBinary SearchSorting |
| 1589 | Majority Element | Easy | ArrayHash TableDivide and Conquer |
| 1590 | Majority Element II | Medium | ArrayHash TableSorting |
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