Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3526 | String Without AAA or BBB | Medium | StringGreedy |
| 3527 | Strings Differ by One Character | Medium | Hash TableStringRolling Hash |
| 3528 | Strobogrammatic Number | Medium | Hash TableTwo PointersString |
| 3529 | Strobogrammatic Number II | Medium | ArrayStringRecursion |
| 3530 | Strobogrammatic Number III | Hard | ArrayStringRecursion |
| 3531 | Strong Friendship | Medium | Database |
| 3532 | Strong Password Checker | Hard | StringGreedyHeap (Priority Queue) |
| 3533 | Strong Password Checker II | Easy | String |
| 3534 | Student Attendance Record I | Easy | String |
| 3535 | Student Attendance Record II | Hard | Dynamic Programming |
| 3536 | Student Record Manager | Easy | Data StructuresStruct/ClassArray |
| 3537 | Students and Examinations | Easy | Database |
| 3538 | Students Report By Geography | Hard | Database |
| 3539 | Students With Invalid Departments | Easy | Database |
| 3540 | Subarray Product Less Than K | Medium | ArrayBinary SearchSliding Window |
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