Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 376 | Lowest Common Ancestor of a Binary Tree III | Medium | Hash TableTwo PointersTree |
| 377 | Lowest Common Ancestor of a Binary Tree IV | Medium | Hash TableTreeDepth-First Search |
| 378 | Lowest Common Ancestor of Deepest Leaves | Medium | Hash TableTreeDepth-First Search |
| 379 | LRU Cache | Medium | Hash TableLinked ListDesign |
| 380 | Magic Squares In Grid | Medium | ArrayHash TableMath |
| 381 | Majority Element | Easy | ArrayHash TableDivide and Conquer |
| 382 | Majority Element II | Medium | ArrayHash TableSorting |
| 383 | Make Array Zero by Subtracting Equal Amounts | Easy | ArrayHash TableGreedy |
| 384 | Make Number of Distinct Characters Equal | Medium | Hash TableStringCounting |
| 385 | Make Sum Divisible by P | Medium | ArrayHash TablePrefix Sum |
| 386 | Make Two Arrays Equal by Reversing Subarrays | Easy | ArrayHash TableSorting |
| 387 | Making File Names Unique | Medium | ArrayHash TableString |
| 388 | Map Sum Pairs | Medium | Hash TableStringDesign |
| 389 | Mark Elements on Array by Performing Queries | Medium | ArrayHash TableSorting |
| 390 | Match Alphanumerical Pattern in Matrix I | Medium | ArrayHash TableString |
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