Update 0404.左叶子之和.md

python version added
This commit is contained in:
jojoo15
2021-05-16 15:14:24 +02:00
committed by GitHub
parent a735216a0b
commit f576698668

View File

@ -205,8 +205,25 @@ class Solution {
Python Python
```Python
**递归**
# Definition for a binary tree node.
# class TreeNode:
# def __init__(self, val=0, left=None, right=None):
# self.val = val
# self.left = left
# self.right = right
class Solution:
def sumOfLeftLeaves(self, root: TreeNode) -> int:
self.res=0
def areleftleaves(root):
if not root:return
if root.left and (not root.left.left) and (not root.left.right):self.res+=root.left.val
areleftleaves(root.left)
areleftleaves(root.right)
areleftleaves(root)
return self.res
```
Go Go