Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 631 | Design SQL | Medium | ArrayHash TableString |
| 632 | Design Task Manager | Medium | Hash TableDesignHeap (Priority Queue) |
| 633 | Design Tic-Tac-Toe | Medium | ArrayHash TableDesign |
| 634 | Design Twitter | Medium | Hash TableLinked ListDesign |
| 635 | Design Underground System | Medium | Hash TableStringDesign |
| 636 | Design Video Sharing Platform | Hard | Hash TableStackDesign |
| 637 | Destroy Sequential Targets | Medium | ArrayHash TableCounting |
| 638 | Destroying Asteroids | Medium | ArrayGreedySorting |
| 639 | Detect Pattern of Length M Repeated K or More Times | Easy | ArrayEnumeration |
| 640 | Determine if a Cell Is Reachable at a Given Time | Medium | Math |
| 641 | Determine if Two Events Have Conflict | Easy | ArrayString |
| 642 | Determine the Minimum Sum of a k-avoiding Array | Medium | MathGreedy |
| 643 | Determine the Winner of a Bowling Game | Easy | ArraySimulation |
| 644 | Determine Whether Matrix Can Be Obtained By Rotation | Easy | ArrayMatrix |
| 645 | Detonate the Maximum Bombs | Medium | ArrayMathDepth-First Search |
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