Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3076 | String Transformation | Hard | MathStringDynamic Programming |
| 3077 | String Transforms Into Another String | Hard | Hash TableStringGraph |
| 3078 | String Without AAA or BBB | Medium | StringGreedy |
| 3079 | Strings Differ by One Character | Medium | Hash TableStringRolling Hash |
| 3080 | Strobogrammatic Number | Medium | Hash TableTwo PointersString |
| 3081 | Strobogrammatic Number II | Medium | ArrayStringRecursion |
| 3082 | Strobogrammatic Number III | Hard | ArrayStringRecursion |
| 3083 | Strong Password Checker | Hard | StringGreedyHeap (Priority Queue) |
| 3084 | Strong Password Checker II | Easy | String |
| 3085 | Student Attendance Record I | Easy | String |
| 3086 | Student Attendance Record II | Hard | Dynamic Programming |
| 3087 | Students and Examinations | Easy | Database |
| 3088 | Students Report By Geography | Hard | Database |
| 3089 | Students With Invalid Departments | Easy | Database |
| 3090 | Subarray Product Less Than K | Medium | ArrayBinary SearchSliding Window |
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