100_same_tree.py

#!/usr/bin/env python
# -*- coding: UTF-8 -*-

##########################################################################
#	> File Name: 100_same_tree.py
#	> Author: Tingjian Lau
#	> Mail: tjliu@mail.ustc.edu.cn
#	> Created Time: 2016/05/15
#########################################################################

# Definition for a binary tree node.
# class TreeNode(object):
#     def __init__(self, x):
#         self.val = x
#         self.left = None
#         self.right = None

class Solution(object):
    def isSameTree(self, p, q):
        """
        :type p: TreeNode
        :type q: TreeNode
        :rtype: bool
        """
        if p and q:
            return p.val == q.val and self.isSameTree(p.left, q.left) and self.isSameTree(p.right, q.right)
        return p == q