Practice problems across 75+ categories
Practice problems frequently asked at Microsoft • 3344 problems | 831 Easy | 1747 Medium | 746 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3061 | Substrings of Size Three with Distinct Characters | Easy | Hash TableStringSliding Window |
| 3062 | Substrings That Begin and End With the Same Letter | Medium | Hash TableMathString |
| 3063 | Subtract the Product and Sum of Digits of an Integer | Easy | Math |
| 3064 | Subtree Inversion Sum | Hard | ArrayDynamic ProgrammingTree |
| 3065 | Subtree of Another Tree | Easy | TreeDepth-First SearchString Matching |
| 3066 | Subtree Removal Game with Fibonacci Tree | Hard | MathDynamic ProgrammingTree |
| 3067 | Successful Pairs of Spells and Potions | Medium | ArrayTwo PointersBinary Search |
| 3068 | Sudoku Solver | Hard | ArrayHash TableBacktracking |
| 3069 | Sum Game | Medium | MathStringGreedy |
| 3070 | Sum in a Matrix | Medium | ArraySortingHeap (Priority Queue) |
| 3071 | Sum Multiples | Easy | Math |
| 3072 | Sum of Absolute Differences in a Sorted Array | Medium | ArrayMathPrefix Sum |
| 3073 | Sum of All Odd Length Subarrays | Easy | ArrayMathPrefix Sum |
| 3074 | Sum of All Subset XOR Totals | Easy | ArrayMathBacktracking |
| 3075 | Sum of Beauty in the Array | Medium | Array |
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