Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 376 | Design Phone Directory | Medium | ArrayHash TableLinked List |
| 377 | Design Snake Game | Medium | ArrayHash TableDesign |
| 378 | Design Spreadsheet | Medium | ArrayHash TableString |
| 379 | Design SQL | Medium | ArrayHash TableString |
| 380 | Design Tic-Tac-Toe | Medium | ArrayHash TableDesign |
| 381 | Destination City | Easy | ArrayHash TableString |
| 382 | Destroy Sequential Targets | Medium | ArrayHash TableCounting |
| 383 | Destroying Asteroids | Medium | ArrayGreedySorting |
| 384 | Detect Cycles in 2D Grid | Medium | ArrayDepth-First SearchBreadth-First Search |
| 385 | Detect Pattern of Length M Repeated K or More Times | Easy | ArrayEnumeration |
| 386 | Detect Squares | Medium | ArrayHash TableDesign |
| 387 | Determine if Two Events Have Conflict | Easy | ArrayString |
| 388 | Determine the Winner of a Bowling Game | Easy | ArraySimulation |
| 389 | Determine Whether Matrix Can Be Obtained By Rotation | Easy | ArrayMatrix |
| 390 | Detonate the Maximum Bombs | Medium | ArrayMathDepth-First Search |
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