Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 391 | Design Snake Game | Medium | ArrayHash TableDesign |
| 392 | Design Spreadsheet | Medium | ArrayHash TableString |
| 393 | Design SQL | Medium | ArrayHash TableString |
| 394 | Design Tic-Tac-Toe | Medium | ArrayHash TableDesign |
| 395 | Destination City | Easy | ArrayHash TableString |
| 396 | Destroy Sequential Targets | Medium | ArrayHash TableCounting |
| 397 | Destroying Asteroids | Medium | ArrayGreedySorting |
| 398 | Detect Cycles in 2D Grid | Medium | ArrayDepth-First SearchBreadth-First Search |
| 399 | Detect Pattern of Length M Repeated K or More Times | Easy | ArrayEnumeration |
| 400 | Detect Squares | Medium | ArrayHash TableDesign |
| 401 | Determine if Two Events Have Conflict | Easy | ArrayString |
| 402 | Determine the Winner of a Bowling Game | Easy | ArraySimulation |
| 403 | Determine Whether Matrix Can Be Obtained By Rotation | Easy | ArrayMatrix |
| 404 | Detonate the Maximum Bombs | Medium | ArrayMathDepth-First Search |
| 405 | DI String Match | Easy | ArrayTwo PointersString |
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