Ozon
12 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 896. Monotonic Array | Easy | 100% | TopicsArray |
| 56. Merge Intervals | Medium | 96.3% | TopicsArraySortingQuicksort |
| 20. Valid Parentheses | Easy | 86.7% | TopicsStringStackBracket Sequences |
| Decode String | Medium | 79.8% | TopicsStringStackRecursion |
| 1. Two Sum | Easy | 70.1% | TopicsArrayHash Table |
| 977. Squares of a Sorted Array | Easy | 70.1% | TopicsArrayTwo PointersSorting |
| Department Top Three Salaries | Hard | 70.1% | TopicsDatabase |
| 121. Best Time to Buy and Sell Stock | Easy | 70.1% | TopicsArrayDynamic Programming |
| 242. Valid Anagram | Easy | 70.1% | TopicsHash TableStringSorting |
| 3. Longest Substring Without Repeating Characters | Medium | 70.1% | TopicsHash TableStringSliding Window |
| 155. Min Stack | Medium | 70.1% | TopicsStackDesign |
| Department Highest Salary | Medium | 70.1% | TopicsDatabase |
