题解 | #合并二叉树#
合并二叉树
http://www.nowcoder.com/practice/7298353c24cc42e3bd5f0e0bd3d1d759
```# 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 t1 TreeNode类
# @param t2 TreeNode类
# @return TreeNode类
#
class Solution:
def mergeTrees(self , t1: TreeNode, t2: TreeNode) -> TreeNode:
if t1==None:
return t2
if t2==None:
return t1
else:
t1.val+=t2.val
t1.left=self.mergeTrees(t1.left, t2.left)
t1.right=self.mergeTrees(t1.right, t2.right)
return t1
##### 这个题整体思路就是利用递归