Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3136 | Sum of Digits in Base K | Easy | Math |
| 3137 | Sum of Digits in the Minimum Number | Easy | ArrayMath |
| 3138 | Sum of Digits of String After Convert | Easy | StringSimulation |
| 3139 | Sum of Distances | Medium | ArrayHash TablePrefix Sum |
| 3140 | Sum of Distances in Tree | Hard | Dynamic ProgrammingTreeDepth-First Search |
| 3141 | Sum of Even Numbers After Queries | Medium | ArraySimulation |
| 3142 | Sum of Floored Pairs | Hard | ArrayMathBinary Search |
| 3143 | Sum of Good Numbers | Easy | Array |
| 3144 | Sum of Good Subsequences | Hard | ArrayHash TableDynamic Programming |
| 3145 | Sum of Imbalance Numbers of All Subarrays | Hard | ArrayHash TableEnumeration |
| 3146 | Sum of k-Mirror Numbers | Hard | MathEnumeration |
| 3147 | Sum of K Subarrays With Length at Least M | Medium | ArrayDynamic ProgrammingPrefix Sum |
| 3148 | Sum of Largest Prime Substrings | Medium | Hash TableMathString |
| 3149 | Sum of Left Leaves | Easy | TreeDepth-First SearchBreadth-First Search |
| 3150 | Sum of Matrix After Queries | Medium | ArrayHash Table |
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