[leetcode]Populating Next Right Pointers in Each Node @ Python
原题地址:https://oj.leetcode.com/problems/populating-next-right-pointers-in-each-node/
题意:
1 / 2 3 / \ / 4 5 6 7
变为:
1 -> NULL / 2 -> 3 -> NULL / \ / 4->5->6->7 -> NULL
解题思路:看到二叉树我们就想到需要使用递归的思路了。直接贴代码吧,思路不难。
代码:
# Definition for a binary tree node # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None # self.next = None class Solution: # @param root, a tree node # @return nothing def connect(self, root): if root and root.left: root.left.next = root.right if root.next: root.right.next = root.next.left else: root.right.next = None self.connect(root.left) self.connect(root.right)
[leetcode]Populating Next Right Pointers in Each Node @ Python,古老的榕树,5-wow.com
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