Practice problems across 75+ categories
Practice problems frequently asked at Backtracking • 109 problems | 3 Easy | 73 Medium | 32 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 46 | Longest Subsequence Repeated k Times | Hard | StringBacktrackingGreedy |
| 47 | Matchsticks to Square | Medium | ArrayDynamic ProgrammingBacktracking |
| 48 | Maximize Score After N Operations | Hard | ArrayMathDynamic Programming |
| 49 | Maximum Compatibility Score Sum | Medium | ArrayDynamic ProgrammingBacktracking |
| 50 | Maximum Good People Based on Statements | Hard | ArrayBacktrackingBit Manipulation |
| 51 | Maximum Length of a Concatenated String with Unique Characters | Medium | ArrayStringBacktracking |
| 52 | Maximum Number of Achievable Transfer Requests | Hard | ArrayBacktrackingBit Manipulation |
| 53 | Maximum Path Quality of a Graph | Hard | ArrayBacktrackingGraph |
| 54 | Maximum Points in an Archery Competition | Medium | ArrayBacktrackingBit Manipulation |
| 55 | Maximum Product of the Length of Two Palindromic Subsequences | Medium | StringDynamic ProgrammingBacktracking |
| 56 | Maximum Rows Covered by Columns | Medium | ArrayBacktrackingBit Manipulation |
| 57 | Maximum Score Words Formed by Letters | Hard | ArrayHash TableString |
| 58 | Maximum Split of Positive Even Integers | Medium | MathBacktrackingGreedy |
| 59 | Maximum Strength of a Group | Medium | ArrayDynamic ProgrammingBacktracking |
| 60 | Maze Solver | Medium | RecursionBacktracking2D Array |
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