Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1006 | Find Trending Hashtags | Medium | Database |
| 1007 | Find Trending Hashtags II | Hard | Database |
| 1008 | Find Triangular Sum of an Array | Medium | ArrayMathSimulation |
| 1009 | Find Two Non-overlapping Sub-arrays Each With Target Sum | Medium | ArrayHash TableBinary Search |
| 1010 | Find Unique Binary String | Medium | ArrayHash TableString |
| 1011 | Find Users With Valid E-Mails | Easy | Database |
| 1012 | Find Valid Emails | Easy | Database |
| 1013 | Find Valid Matrix Given Row and Column Sums | Medium | ArrayGreedyMatrix |
| 1014 | Find Valid Pair of Adjacent Digits in String | Easy | Hash TableStringCounting |
| 1015 | Find Weighted Median Node in Tree | Hard | ArrayBinary SearchDynamic Programming |
| 1016 | Find Winner on a Tic Tac Toe Game | Easy | ArrayHash TableMatrix |
| 1017 | Find Words Containing Character | Easy | ArrayString |
| 1018 | Find X-Sum of All K-Long Subarrays I | Easy | ArrayHash TableSliding Window |
| 1019 | Find X-Sum of All K-Long Subarrays II | Hard | ArrayHash TableSliding Window |
| 1020 | Find X Value of Array I | Medium | ArrayMathDynamic Programming |
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