题解 | 牛群的最大高度

# 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 root TreeNode类 
# @return int整型
#
class Solution:
    def findMaxHeight(self , root: TreeNode) -> int:
        # write code here
        if not root:
            return -1
        else:
            if root.left and root.right:
                 return max(root.val, self.findMaxHeight(root.left), self.findMaxHeight(root.right))
            elif root.left:
                return max(root.val, self.findMaxHeight(root.left))
            elif root.right:
                 return max(root.val, self.findMaxHeight(root.right))
            return root.val