BST 문제는 GPT 사용...

Author: devyulbae

validate-binary-search-tree/devyulbae.py

@@ -0,0 +1,18 @@
+"""
+Blind 75 - LeetCode Problem 98: Validate Binary Search Tree
+https://leetcode.com/problems/validate-binary-search-tree/
+이진 탐색 트리인지 확인하기
+
+"""
+from typing import Optional
+
+# Definition for a binary tree node.
+class TreeNode:
+    def __init__(self, val=0, left=None, right=None):
+        self.val = val
+        self.left = left
+        self.right = right
+        
+class Solution:
+    def isValidBST(self, root: Optional[TreeNode]) -> bool:
+