Practice problems across 75+ categories
Practice problems frequently asked at Microsoft • 3344 problems | 831 Easy | 1747 Medium | 746 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 571 | Count the Number of Beautiful Subarrays | Medium | ArrayHash TableBit Manipulation |
| 572 | Count the Number of Complete Components | Medium | Depth-First SearchBreadth-First SearchUnion Find |
| 573 | Count the Number of Computer Unlocking Permutations | Medium | ArrayMathBrainteaser |
| 574 | Count the Number of Consistent Strings | Easy | ArrayHash TableString |
| 575 | Count the Number of Experiments | Medium | Database |
| 576 | Count the Number of Fair Pairs | Medium | ArrayTwo PointersBinary Search |
| 577 | Count the Number of Good Nodes | Medium | TreeDepth-First Search |
| 578 | Count the Number of Good Partitions | Hard | ArrayHash TableMath |
| 579 | Count the Number of Good Subarrays | Medium | ArrayHash TableSliding Window |
| 580 | Count the Number of Good Subsequences | Medium | Hash TableMathString |
| 581 | Count the Number of Houses at a Certain Distance I | Medium | Breadth-First SearchGraphPrefix Sum |
| 582 | Count the Number of Houses at a Certain Distance II | Hard | GraphPrefix Sum |
| 583 | Count the Number of Ideal Arrays | Hard | MathDynamic ProgrammingCombinatorics |
| 584 | Count the Number of Incremovable Subarrays I | Easy | ArrayTwo PointersBinary Search |
| 585 | Count the Number of Incremovable Subarrays II | Hard | ArrayTwo PointersBinary Search |
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