# **Leetcode筆記(Flip Equivalent Binary Trees)** :::info :information_source: 題目 : Flip Equivalent Binary Trees, 類型 : binary tree , 等級 : medium 日期 : 2023/11/29 ::: ### 嘗試 ```python ``` --- ### **優化** ```python class Solution: def flipEquiv(self, root1: Optional[TreeNode], root2: Optional[TreeNode]) -> bool: def isValid(node1, node2): if not node1 and not node2: return True if not node1 or not node2: return False if node1.val != node2.val: return False return (isValid(node1.right, node2.right) and isValid(node1.left, node2.left)) or (isValid(node1.right, node2.left) and isValid(node1.left, node2.right)) return isValid(root1, root2) ``` --- **思路** **講解連結** Provided by.