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• 2024年1月17日 (三) 16:57 Riguz 留言 贡献创建了页面98.Validate Binary Search Tree （创建页面，内容为“=Description= {{LeetCode |id=validate-binary-search-tree |no=98 |difficulty=Medium |category=Tree |collection=MS |title=Validate Binary Search Tree |summary=Given the root of a binary tree, determine if it is a valid binary search tree (BST).}} 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 s…”）