부부의 코딩 성장 일기

1. 문제 링크 https://leetcode.com/problems/validate-binary-search-tree/ Validate Binary Search Tree - LeetCode Can you solve this real interview question? Validate Binary Search Tree - 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 le leetcode.com 2. 문제 설명 주어진 tree가 이진..