Docusign
28 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 3883. Count Non Decreasing Arrays With Given Digit Sums | Hard | 100% | TopicsArrayDynamic ProgrammingPrefix Sum |
| 1797. Design Authentication Manager | Medium | 96.5% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| Implement Trie (Prefix Tree) | Medium | 92.5% | TopicsHash TableStringDesignTrie |
| 3588. Find Maximum Area of a Triangle | Medium | 87.7% | TopicsArrayHash TableMathGreedyGeometryEnumeration |
| 3. Longest Substring Without Repeating Characters | Medium | 81.9% | TopicsHash TableStringSliding Window |
| 146. LRU Cache | Medium | 81.9% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| Insert Delete GetRandom O(1) | Medium | 81.9% | TopicsArrayHash TableMathDesignRandomized |
| 1268. Search Suggestions System | Medium | 81.9% | TopicsArrayStringBinary SearchTrieSortingHeap (Priority Queue) |
| 347. Top K Frequent Elements | Medium | 74.4% | TopicsArrayHash TableDivide and ConquerSortingHeap (Priority Queue)Bucket SortCountingQuickselect |
| 12. Integer to Roman | Medium | 74.4% | TopicsHash TableMathString |
| Meeting Rooms II | Medium | 74.4% | TopicsArrayTwo PointersGreedySortingHeap (Priority Queue)Prefix Sum |
| 200. Number of Islands | Medium | 74.4% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| Logger Rate Limiter | Easy | 74.4% | TopicsHash TableDesignData Stream |
| 621. Task Scheduler | Medium | 74.4% | TopicsArrayHash TableGreedySortingHeap (Priority Queue)Counting |
| 49. Group Anagrams | Medium | 74.4% | TopicsArrayHash TableStringSorting |
| Number of Atoms | Hard | 63.9% | TopicsHash TableStringStackSorting |
| 213. House Robber II | Medium | 63.9% | TopicsArrayDynamic Programming |
| House Robber III | Medium | 63.9% | TopicsDynamic ProgrammingTreeDepth-First SearchBinary TreeDP on Trees |
| 1368. Minimum Cost to Make at Least One Valid Path in a Grid | Hard | 63.9% | TopicsArrayBreadth-First SearchGraph TheoryHeap (Priority Queue)MatrixShortest Path0-1 BFSDijkstra's Algorithm |
| 127. Word Ladder | Hard | 63.9% | TopicsHash TableStringBreadth-First SearchBidirectional Search |
| 21. Merge Two Sorted Lists | Easy | 63.9% | TopicsLinked ListRecursion |
| 2326. Spiral Matrix IV | Medium | 63.9% | TopicsArrayLinked ListMatrixSimulation |
| 42. Trapping Rain Water | Hard | 63.9% | TopicsArrayTwo PointersDynamic ProgrammingStackMonotonic Stack |
| 1235. Maximum Profit in Job Scheduling | Hard | 63.9% | TopicsArrayBinary SearchDynamic ProgrammingSorting |
| 162. Find Peak Element | Medium | 63.9% | TopicsArrayBinary Search |
