Tag: LeetCode 101: 98 Validate Binary Search Tree

LeetCode Problem: 98. Validate Binary Search Tree https://leetcode.com/problems/validate-binary-search-tree/description/ Problem Description: 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.…