# 相同的树
给你两棵二叉树的根节点 p
和 q
,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:
- 两棵树上的节点数目都在范围
[0, 100]
内 -104 <= Node.val <= 104
## 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
```