Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 646 | Split Array with Equal Sum | Hard | ArrayHash TablePrefix Sum |
| 647 | Split the Array | Easy | ArrayHash TableCounting |
| 648 | Split the Array to Make Coprime Products | Hard | ArrayHash TableMath |
| 649 | Stickers to Spell Word | Hard | ArrayHash TableString |
| 650 | Stock Price Fluctuation | Medium | Hash TableDesignHeap (Priority Queue) |
| 651 | String Transforms Into Another String | Hard | Hash TableStringGraph |
| 652 | Strings Differ by One Character | Medium | Hash TableStringRolling Hash |
| 653 | Strobogrammatic Number | Medium | Hash TableTwo PointersString |
| 654 | Subarray Sum Equals K | Medium | ArrayHash TablePrefix Sum |
| 655 | Subarray Sums Divisible by K | Medium | ArrayHash TablePrefix Sum |
| 656 | Subarrays Distinct Element Sum of Squares I | Easy | ArrayHash Table |
| 657 | Subarrays with K Different Integers | Hard | ArrayHash TableSliding Window |
| 658 | Subdomain Visit Count | Medium | ArrayHash TableString |
| 659 | Subsequences with a Unique Middle Mode I | Hard | ArrayHash TableMath |
| 660 | Subsequences with a Unique Middle Mode II | Hard | ArrayHash TableMath |
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