Citigroup
7 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1. Two Sum | Easy | 100% | TopicsArrayHash Table |
| 121. Best Time to Buy and Sell Stock | Easy | 92.3% | TopicsArrayDynamic Programming |
| Evaluate Reverse Polish Notation | Medium | 81.4% | TopicsArrayMathStack |
| 48. Rotate Image | Medium | 81.4% | TopicsArrayMathMatrix |
| Minimum Size Subarray Sum | Medium | 81.4% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 1944. Number of Visible People in a Queue | Hard | 81.4% | TopicsArrayStackMonotonic Stack |
| 3. Longest Substring Without Repeating Characters | Medium | 81.4% | TopicsHash TableStringSliding Window |
