Duolingo
5 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2227. Encrypt and Decrypt Strings | Hard | 100% | TopicsArrayHash TableStringDesignTrie |
| 2090. K Radius Subarray Averages | Medium | 83.3% | TopicsArraySliding Window |
| 1733. Minimum Number of People to Teach | Medium | 83.3% | TopicsArrayHash TableGreedy |
| 2365. Task Scheduler II | Medium | 74.3% | TopicsArrayHash TableSimulation |
| 329. Longest Increasing Path in a Matrix | Hard | 74.3% | TopicsArrayDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph TheoryTopological SortMemoizationMatrixDirected Acyclic Graph |
