Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3796 | Unique Paths II | Medium | ArrayDynamic ProgrammingMatrix |
| 3797 | Unique Paths III | Hard | ArrayBacktrackingBit Manipulation |
| 3798 | Unique Substrings in Wraparound String | Medium | StringDynamic Programming |
| 3799 | Unique Substrings With Equal Digit Frequency | Medium | \ |
| 3800 | Unique Word Abbreviation | Medium | ArrayHash TableString |
| 3801 | Unit Conversion I | Medium | Depth-First SearchBreadth-First SearchGraph |
| 3802 | Unit Conversion II | Medium | ArrayMathDepth-First Search |
| 3803 | Unit Price Calculator | Easy | Variables & DatatypesFloatArithmetic |
| 3804 | Univalued Binary Tree | Easy | TreeDepth-First SearchBreadth-First Search |
| 3805 | Unpopular Books | Unknown | Database |
| 3806 | User Activities within Time Bounds | Hard | Database |
| 3807 | User Activity for the Past 30 Days I | Easy | Database |
| 3808 | User Activity for the Past 30 Days II | Easy | Database |
| 3809 | User Purchase Platform | Hard | Database |
| 3810 | Users That Actively Request Confirmation Messages | Easy | Database |
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