Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3151 | Sum Of Special Evenly-Spaced Elements In Array | Hard | ArrayDynamic Programming |
| 3152 | Sum of Square Numbers | Medium | MathTwo PointersBinary Search |
| 3153 | Sum of Squares of Special Elements | Easy | ArrayEnumeration |
| 3154 | Sum of Subarray Minimums | Medium | ArrayDynamic ProgrammingStack |
| 3155 | Sum of Subarray Ranges | Medium | ArrayStackMonotonic Stack |
| 3156 | Sum of Subsequence Widths | Hard | ArrayMathSorting |
| 3157 | Sum of Total Strength of Wizards | Hard | ArrayStackMonotonic Stack |
| 3158 | Sum of Two Integers | Medium | MathBit Manipulation |
| 3159 | Sum of Unique Elements | Easy | ArrayHash TableCounting |
| 3160 | Sum of Values at Indices With K Set Bits | Easy | ArrayBit Manipulation |
| 3161 | Sum of Variable Length Subarrays | Easy | ArrayPrefix Sum |
| 3162 | Sum Root to Leaf Numbers | Medium | TreeDepth-First SearchBinary Tree |
| 3163 | Summary Ranges | Easy | Array |
| 3164 | Super Pow | Medium | MathDivide and Conquer |
| 3165 | Super Ugly Number | Medium | ArrayMathDynamic Programming |
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