Practice problems across 75+ categories
Practice problems frequently asked at Recursion • 50 problems | 11 Easy | 24 Medium | 15 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1 | Add Two Numbers | Medium | Linked ListMathRecursion |
| 2 | All Possible Full Binary Trees | Medium | Dynamic ProgrammingTreeRecursion |
| 3 | Basic Calculator | Hard | MathStringStack |
| 4 | Basic Calculator III | Hard | MathStringStack |
| 5 | Basic Calculator IV | Hard | Hash TableMathString |
| 6 | Count Collisions of Monkeys on a Polygon | Medium | MathRecursion |
| 7 | Count Good Numbers | Medium | MathRecursion |
| 8 | Decode String | Medium | StringStackRecursion |
| 9 | Different Ways to Add Parentheses | Medium | MathStringDynamic Programming |
| 10 | Elimination Game | Medium | MathRecursion |
| 11 | Fibonacci Number | Easy | MathDynamic ProgrammingRecursion |
| 12 | Find Kth Bit in Nth Binary String | Medium | StringRecursionSimulation |
| 13 | Find the K-th Character in String Game I | Easy | MathBit ManipulationRecursion |
| 14 | Find the K-th Character in String Game II | Hard | MathBit ManipulationRecursion |
| 15 | Find the Winner of the Circular Game | Medium | ArrayMathRecursion |
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