Practice problems across 75+ categories
Practice problems frequently asked at Microsoft • 3344 problems | 831 Easy | 1747 Medium | 746 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 496 | Count Numbers with Non-Decreasing Digits | Unknown | MathStringDynamic Programming |
| 497 | Count Numbers with Unique Digits | Medium | MathDynamic ProgrammingBacktracking |
| 498 | Count Numbers With Unique Digits II | Easy | Hash TableMathDynamic Programming |
| 499 | Count Occurrences in Text | Medium | Database |
| 500 | Count Odd Letters from Number | Easy | Hash TableStringSimulation |
| 501 | Count Odd Numbers in an Interval Range | Easy | Math |
| 502 | Count of Integers | Hard | MathStringDynamic Programming |
| 503 | Count of Interesting Subarrays | Medium | ArrayHash TablePrefix Sum |
| 504 | Count of Matches in Tournament | Easy | MathSimulation |
| 505 | Count of Range Sum | Hard | ArrayBinary SearchDivide and Conquer |
| 506 | Count of Smaller Numbers After Self | Hard | ArrayBinary SearchDivide and Conquer |
| 507 | Count of Sub-Multisets With Bounded Sum | Hard | ArrayHash TableDynamic Programming |
| 508 | Count of Substrings Containing Every Vowel and K Consonants I | Medium | Hash TableStringSliding Window |
| 509 | Count of Substrings Containing Every Vowel and K Consonants II | Medium | Hash TableStringSliding Window |
| 510 | Count Operations to Obtain Zero | Easy | MathSimulation |
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