# 相同的树

给你两棵二叉树的根节点 pq ,编写一个函数来检验这两棵树是否相同。

如果两个树在结构上相同,并且节点具有相同的值,则认为它们是相同的。

 

示例 1:

输入:p = [1,2,3], q = [1,2,3]
输出:
true

示例 2:

输入:p = [1,2], q = [1,null,2]
输出:
false

示例 3:

输入:p = [1,2,1], q = [1,1,2]
输出:
false

 

提示:

## template ```python 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 == q: return True try: left = right = True if p.val == q.val: left = self.isSameTree(p.left, q.left) right = self.isSameTree(p.right, q.right) return (left and right) except: return False return False # %% s = Solution() print(s.isSameTree(p = [1,2,3], q = [1,2,3])) ``` ## 答案 ```python ``` ## 选项 ### A ```python ``` ### B ```python ``` ### C ```python ```