Coupang
48 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Decode String | Medium | 100% | TopicsStringStackRecursion |
| 78. Subsets | Medium | 97.2% | TopicsArrayBacktrackingBit Manipulation |
| 139. Word Break | Medium | 97.2% | TopicsArrayHash TableStringDynamic ProgrammingTrieMemoizationBrute-Force Search |
| Range Module | Hard | 94.1% | TopicsDesignSegment TreeOrdered Set |
| 724. Find Pivot Index | Easy | 94.1% | TopicsArrayPrefix Sum |
| 776. Split BST | Medium | 94.1% | TopicsTreeBinary Search TreeRecursionBinary Tree |
| Longest Substring with At Most K Distinct Characters | Medium | 94.1% | TopicsHash TableStringSliding Window |
| LFU Cache | Hard | 94.1% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 207. Course Schedule | Medium | 86.6% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| 402. Remove K Digits | Medium | 86.6% | TopicsStringStackGreedyMonotonic Stack |
| 934. Shortest Bridge | Medium | 86.6% | TopicsArrayDepth-First SearchBreadth-First SearchMatrix |
| 146. LRU Cache | Medium | 81.8% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| Shopping Offers | Medium | 81.8% | TopicsArrayDynamic ProgrammingBacktrackingBit ManipulationMemoizationBitmaskKnapsack ProblemComplete Knapsack |
| 1044. Longest Duplicate Substring | Hard | 76% | TopicsStringBinary SearchSliding WindowRolling HashSuffix ArrayHash FunctionSuffix AutomatonSuffix TreeZ AlgorithmBoyer–Moore String-Search Algorithm |
| Wildcard Matching | Hard | 76% | TopicsStringDynamic ProgrammingGreedyRecursion |
| Find K Closest Elements | Medium | 76% | TopicsArrayTwo PointersBinary SearchSliding WindowSortingHeap (Priority Queue) |
| 84. Largest Rectangle in Histogram | Hard | 76% | TopicsArrayStackMonotonic StackRange Minimum/Maximum Query |
| 56. Merge Intervals | Medium | 76% | TopicsArraySortingQuicksort |
| Design In-Memory File System | Hard | 68.4% | TopicsHash TableStringDesignTrieSorting |
| Sliding Window Maximum | Hard | 68.4% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query |
| Longest Repeating Substring | Medium | 68.4% | TopicsStringBinary SearchDynamic ProgrammingRolling HashSuffix ArrayHash FunctionSuffix AutomatonSuffix Tree |
| 49. Group Anagrams | Medium | 68.4% | TopicsArrayHash TableStringSorting |
| Number of Distinct Islands | Medium | 68.4% | TopicsArrayHash TableDepth-First SearchBreadth-First SearchUnion-FindSortingMatrixHash Function |
| 3. Longest Substring Without Repeating Characters | Medium | 68.4% | TopicsHash TableStringSliding Window |
| 295. Find Median from Data Stream | Hard | 68.4% | TopicsTwo PointersDesignSortingHeap (Priority Queue)Data Stream |
