Sony
5 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Subtree Removal Game with Fibonacci Tree | Hard | 100% | TopicsMathDynamic ProgrammingTreeBinary TreeGame TheorySprague–Grundy Theorem |
| 1. Two Sum | Easy | 78.6% | TopicsArrayHash Table |
| Random Pick with Weight | Medium | 69.8% | TopicsArrayMathBinary SearchPrefix SumRandomized |
| 1512. Number of Good Pairs | Easy | 69.8% | TopicsArrayHash TableMathCounting |
| 20. Valid Parentheses | Easy | 69.8% | TopicsStringStackBracket Sequences |
