LeetCode: Invert Binary Tree

 1 /**
 2  * Definition for a binary tree node.
 3  * public class TreeNode {
 4  *     int val;
 5  *     TreeNode left;
 6  *     TreeNode right;
 7  *     TreeNode(int x) { val = x; }
 8  * }
 9  */
10 public class Solution {
11     public TreeNode invertTree(TreeNode root) {
12         if (root == null) return null;
13         TreeNode tmp = root.left;
14         root.left = invertTree(root.right);
15         root.right = invertTree(tmp);
16         return root;
17     }
18 }

posted @ 2016-11-24 15:06 ying_vincent 阅读(111) 评论(0) 收藏举报

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