Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1336 | Longest Winning Streak | Hard | DatabaseHash TableSliding Window |
| 1337 | Longest Word in Dictionary | Medium | ArrayHash TableString |
| 1338 | Longest Word With All Prefixes | Medium | ArrayStringDepth-First Search |
| 1339 | Longest ZigZag Path in a Binary Tree | Medium | Dynamic ProgrammingTreeDepth-First Search |
| 1340 | Low-Quality Problems | Easy | Database |
| 1341 | Lowest Common Ancestor of a Binary Search Tree | Medium | TreeDepth-First SearchBinary Search Tree |
| 1342 | Lowest Common Ancestor of a Binary Tree | Medium | TreeDepth-First SearchBinary Tree |
| 1343 | Lowest Common Ancestor of a Binary Tree IV | Medium | Hash TableTreeDepth-First Search |
| 1344 | LRU Cache | Medium | Hash TableLinked ListDesign |
| 1345 | Lucky Numbers in a Matrix | Easy | ArrayMatrix |
| 1346 | Magic Squares In Grid | Medium | ArrayHash TableMath |
| 1347 | Magical String | Medium | Two PointersString |
| 1348 | Magnetic Force Between Two Balls | Medium | ArrayBinary SearchSorting |
| 1349 | Majority Element | Easy | ArrayHash TableDivide and Conquer |
| 1350 | Make a Positive Array | Medium | ArrayGreedyPrefix Sum |
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