98. Validate Binary Search Tree
์์ค ์ฝ๋๋ ์ฌ๊ธฐ ์์ต๋๋ค. ๋ฌธ์ ๋ ์ฌ๊ธฐ ์์ต๋๋ค. Problem Given the root of a binary tree, determine if it is a valid binary search tree (BST). A valid BST is defined as follows: The left subtree of a node contains only nodes with keys less than the node's key. The right subtree of a node contains only nodes with keys greater than the node's key. Both the left and right subtrees must also be binary search tr..
Algorithm/LeetCode Daily Challenge
2022. 8. 11. 22:30
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