# class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None # # 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 # # # @param pRoot TreeNode类 # @return bool布尔型 # 递归判断是否镜像 class Solution: def isSymmetrical(self , pRoot: TreeNode) -> bool: ...