Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 391 | Max Pair Sum in an Array | Easy | ArrayHash Table |
| 392 | Max Points on a Line | Hard | ArrayHash TableMath |
| 393 | Max Sum of a Pair With Equal Sum of Digits | Medium | ArrayHash TableSorting |
| 394 | Maximize the Beauty of the Garden | Hard | ArrayHash TableGreedy |
| 395 | Maximize the Profit as the Salesman | Medium | ArrayHash TableBinary Search |
| 396 | Maximize Y‑Sum by Picking a Triplet of Distinct X‑Values | Medium | ArrayHash TableGreedy |
| 397 | Maximum Difference Between Even and Odd Frequency I | Easy | Hash TableStringCounting |
| 398 | Maximum Earnings From Taxi | Medium | ArrayHash TableBinary Search |
| 399 | Maximum Elegance of a K-Length Subsequence | Hard | ArrayHash TableStack |
| 400 | Maximum Equal Frequency | Hard | ArrayHash Table |
| 401 | Maximum Erasure Value | Medium | ArrayHash TableSliding Window |
| 402 | Maximum Frequency After Subarray Operation | Medium | ArrayHash TableDynamic Programming |
| 403 | Maximum Frequency Score of a Subarray | Hard | ArrayHash TableMath |
| 404 | Maximum Frequency Stack | Hard | Hash TableStackDesign |
| 405 | Maximum Genetic Difference Query | Hard | ArrayHash TableBit Manipulation |
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