Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2701 | Sum of Subarray Minimums | Medium | ArrayDynamic ProgrammingStack |
| 2702 | Sum of Subarray Ranges | Medium | ArrayStackMonotonic Stack |
| 2703 | Sum of Subsequence Widths | Hard | ArrayMathSorting |
| 2704 | Sum of Total Strength of Wizards | Hard | ArrayStackMonotonic Stack |
| 2705 | Sum of Unique Elements | Easy | ArrayHash TableCounting |
| 2706 | Sum of Values at Indices With K Set Bits | Easy | ArrayBit Manipulation |
| 2707 | Sum of Variable Length Subarrays | Easy | ArrayPrefix Sum |
| 2708 | Sum Root to Leaf Numbers | Medium | TreeDepth-First SearchBinary Tree |
| 2709 | Summary Ranges | Easy | Array |
| 2710 | Super Pow | Medium | MathDivide and Conquer |
| 2711 | Super Washing Machines | Hard | ArrayGreedy |
| 2712 | Surrounded Regions | Medium | ArrayDepth-First SearchBreadth-First Search |
| 2713 | Swap Adjacent in LR String | Medium | Two PointersString |
| 2714 | Swap For Longest Repeated Character Substring | Medium | Hash TableStringSliding Window |
| 2715 | Swap Nodes in Pairs | Medium | Linked ListRecursion |
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