Practice problems across 75+ categories
Practice problems frequently asked at Twitter/X • 17 problems | 3 Easy | 10 Medium | 3 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | Design Twitter | Medium | Hash TableLinked ListDesign |
| 2 | Find Bursty Behavior | Medium | Database |
| 3 | Find Followers Count | Easy | Database |
| 4 | Find Trending Hashtags | Medium | Database |
| 5 | Find Trending Hashtags II | Hard | Database |
| 6 | Flatten 2D Vector | Medium | ArrayTwo PointersDesign |
| 7 | Friend Requests I: Overall Acceptance Rate | Unknown | Database |
| 8 | Friend Requests II: Who Has the Most Friends | Medium | Database |
| 9 | Generate Tag for Video Caption | Easy | StringSimulation |
| 10 | Invalid Tweets | Easy | Database |
| 11 | Page Recommendations | Medium | Database |
| 12 | Page Recommendations II | Hard | Database |
| 13 | Popularity Percentage | Hard | Database |
| 14 | Reported Posts II | Medium | Database |
| 15 | Second Degree Follower | Medium | Database |
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