Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3166 | Sum of Two Integers | Medium | MathBit Manipulation |
| 3167 | Sum of Unique Elements | Easy | ArrayHash TableCounting |
| 3168 | Sum of Values at Indices With K Set Bits | Easy | ArrayBit Manipulation |
| 3169 | Sum of Variable Length Subarrays | Easy | ArrayPrefix Sum |
| 3170 | Sum Root to Leaf Numbers | Medium | TreeDepth-First SearchBinary Tree |
| 3171 | Summary Ranges | Easy | Array |
| 3172 | Super Palindromes | Hard | MathStringEnumeration |
| 3173 | Super Pow | Medium | MathDivide and Conquer |
| 3174 | Super Ugly Number | Medium | ArrayMathDynamic Programming |
| 3175 | Super Washing Machines | Hard | ArrayGreedy |
| 3176 | Surface Area of 3D Shapes | Easy | ArrayMathGeometry |
| 3177 | Surrounded Regions | Medium | ArrayDepth-First SearchBreadth-First Search |
| 3178 | Swap Adjacent in LR String | Medium | Two PointersString |
| 3179 | Swap For Longest Repeated Character Substring | Medium | Hash TableStringSliding Window |
| 3180 | Swap Nodes in Pairs | Medium | Linked ListRecursion |
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