DoorDash
69 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 987. Vertical Order Traversal of a Binary Tree | Hard | 50.9% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchSortingBinary Tree |
| 84. Largest Rectangle in Histogram | Hard | 50.9% | TopicsArrayStackMonotonic StackRange Minimum/Maximum Query |
| 542. 01 Matrix | Medium | 50.9% | TopicsArrayDynamic ProgrammingBreadth-First SearchMatrix |
| Minimum Size Subarray Sum | Medium | 50.9% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 210. Course Schedule II | Medium | 48.1% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological Sort |
| Basic Calculator | Hard | 48.1% | TopicsMathStringStackRecursion |
| Basic Calculator II | Medium | 48.1% | TopicsMathStringStack |
| 1779. Find Nearest Point That Has the Same X or Y Coordinate | Easy | 48.1% | TopicsArray |
| 859. Buddy Strings | Easy | 48.1% | TopicsHash TableString |
| 1. Two Sum | Easy | 44.9% | TopicsArrayHash Table |
| Next Permutation | Medium | 44.9% | TopicsArrayTwo Pointers |
| 1143. Longest Common Subsequence | Medium | 44.9% | TopicsStringDynamic ProgrammingLongest Common Subsequence |
| 297. Serialize and Deserialize Binary Tree | Hard | 44.9% | TopicsStringTreeDepth-First SearchBreadth-First SearchDesignBinary Tree |
| Asteroid Collision | Medium | 44.9% | TopicsArrayStackSimulation |
| 695. Max Area of Island | Medium | 44.9% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 212. Word Search II | Hard | 41% | TopicsArrayStringBacktrackingTrieMatrix |
| Sliding Window Maximum | Hard | 41% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query |
| Best Meeting Point | Hard | 41% | TopicsArrayMathSortingMatrix |
| 1664. Ways to Make a Fair Array | Medium | 41% | TopicsArrayPrefix Sum |
| 924. Minimize Malware Spread | Hard | 41% | TopicsArrayHash TableDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| Sliding Window Median | Hard | 41% | TopicsArrayHash TableSliding WindowHeap (Priority Queue)Treap |
| 207. Course Schedule | Medium | 41% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| 56. Merge Intervals | Medium | 41% | TopicsArraySortingQuicksort |
| 37. Sudoku Solver | Hard | 35.9% | TopicsArrayHash TableBacktrackingMatrixAlgorithm XDancing Links |
| 55. Jump Game | Medium | 35.9% | TopicsArrayDynamic ProgrammingGreedy |
