Practice problems across 75+ categories
Practice problems frequently asked at Microsoft • 3344 problems | 831 Easy | 1747 Medium | 746 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 121 | Balanced Binary Tree | Easy | TreeDepth-First SearchBinary Tree |
| 122 | Base 7 | Easy | MathString |
| 123 | Baseball Game | Easy | ArrayStackSimulation |
| 124 | Basic Calculator | Hard | MathStringStack |
| 125 | Basic Calculator II | Medium | MathStringStack |
| 126 | Battleships in a Board | Medium | ArrayDepth-First SearchMatrix |
| 127 | Beautiful Arrangement | Medium | ArrayDynamic ProgrammingBacktracking |
| 128 | Beautiful Arrangement II | Medium | ArrayMath |
| 129 | Beautiful Array | Medium | ArrayMathDivide and Conquer |
| 130 | Beautiful Pairs | Hard | ArrayMathDivide and Conquer |
| 131 | Beautiful Towers I | Medium | ArrayStackMonotonic Stack |
| 132 | Beautiful Towers II | Medium | ArrayStackMonotonic Stack |
| 133 | Before and After Puzzle | Medium | ArrayHash TableString |
| 134 | Best Meeting Point | Hard | ArrayMathSorting |
| 135 | Best Poker Hand | Easy | ArrayHash TableCounting |
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