Practice problems across 75+ categories
Practice problems frequently asked at Microsoft • 3344 problems | 831 Easy | 1747 Medium | 746 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1531 | Longest Substring Of All Vowels in Order | Medium | StringSliding Window |
| 1532 | Longest Substring of One Repeating Character | Hard | ArrayStringSegment Tree |
| 1533 | Longest Substring with At Least K Repeating Characters | Medium | Hash TableStringDivide and Conquer |
| 1534 | Longest Substring with At Most K Distinct Characters | Medium | Hash TableStringSliding Window |
| 1535 | Longest Substring with At Most Two Distinct Characters | Medium | Hash TableStringSliding Window |
| 1536 | Longest Substring Without Repeating Characters | Medium | Hash TableStringSliding Window |
| 1537 | Longest Team Pass Streak | Hard | Database |
| 1538 | Longest Turbulent Subarray | Medium | ArrayDynamic ProgrammingSliding Window |
| 1539 | Longest Uncommon Subsequence I | Easy | String |
| 1540 | Longest Uncommon Subsequence II | Medium | ArrayHash TableTwo Pointers |
| 1541 | Longest Unequal Adjacent Groups Subsequence I | Easy | ArrayStringDynamic Programming |
| 1542 | Longest Unequal Adjacent Groups Subsequence II | Medium | ArrayStringDynamic Programming |
| 1543 | Longest Univalue Path | Medium | TreeDepth-First SearchBinary Tree |
| 1544 | Longest Uploaded Prefix | Medium | Hash TableBinary SearchUnion Find |
| 1545 | Longest Valid Parentheses | Hard | StringDynamic ProgrammingStack |
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