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Problems

8 problems

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Linked ListArray578Dynamic Programming332String191Math187Binary Search136Hash Table134Sorting106Greedy104Bit Manipulation103Graph96Depth-First Search91Heap (Priority Queue)78Prefix Sum77Matrix75Breadth-First Search71All topics

Hard · 8 results

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TitleSolutionAcceptDifficultyTopics
23. Merge k Sorted ListsVideo
Solution60.3%Hard
Divide and Conquer, Heap (Priority Queue) +2· 50 companies
25. Reverse Nodes in k-GroupVideo
Solution67.4%Hard
Linked List, Recursion· 27 companies
432. All O`one Data StructureVideo
Solution44.2%Hard
Design, Doubly-Linked List +2· 13 companies
460. LFU CacheVideo
Solution50.0%Hard
Design, Doubly-Linked List +2· 32 companies
716. Max StackVideoPremium
Solution45.9%Hard
Design, Doubly-Linked List +3· 10 companies
1206. Design SkiplistVideo
Solution59.7%Hard
Design, Linked List· 8 companies
2296. Design a Text EditorVideo
Solution52.1%Hard
Design, Doubly-Linked List +4· 10 companies
3510. Minimum Pair Removal to Sort Array IIVideo
Solution39.1%Hard
Array, Doubly-Linked List +5· 3 companies
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