Athenahealth
5 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| The Number of Rich Customers | Easy | 100% | TopicsDatabase |
| 3. Longest Substring Without Repeating Characters | Medium | 84.2% | TopicsHash TableStringSliding Window |
| 5. Longest Palindromic Substring | Medium | 77.6% | TopicsTwo PointersStringDynamic ProgrammingManacher |
| 49. Group Anagrams | Medium | 68.3% | TopicsArrayHash TableStringSorting |
| 56. Merge Intervals | Medium | 68.3% | TopicsArraySortingQuicksort |
