Alibaba
5 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Split Array with Equal Sum | Hard | 100% | TopicsArrayHash TablePrefix Sum |
| Split Concatenated Strings | Medium | 100% | TopicsArrayStringGreedy |
| Path Sum IV | Medium | 100% | TopicsArrayHash TableTreeDepth-First SearchBinary Tree |
| 678. Valid Parenthesis String | Medium | 100% | TopicsStringDynamic ProgrammingStackGreedyBracket Sequences |
| 215. Kth Largest Element in an Array | Medium | 67.7% | TopicsArrayDivide and ConquerSortingHeap (Priority Queue)Quickselect |
