Problem Library

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Showing 6 of 81 problems in NeetCode 250.

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Array43Depth-First Search20Binary Tree17

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Title	Difficulty	Topics
23. Merge k Sorted Lists	Hard	Linked ListDivide and ConquerHeap (Priority Queue)+1 more
53. Maximum Subarray	Medium	ArrayDivide and ConquerDynamic Programming
105. Construct Binary Tree from Preorder and Inorder Traversal	Medium	ArrayHash TableDivide and Conquer+2 more
106. Construct Binary Tree from Inorder and Postorder Traversal	Medium	ArrayHash TableDivide and Conquer+2 more
169. Majority Element	Easy	ArrayHash TableDivide and Conquer+2 more
215. Kth Largest Element in an Array	Medium	ArrayDivide and ConquerSorting+2 more