二叉树镜像

Posted 2020-09-07

题目描述

操作给定的二叉树，将其变换为源二叉树的镜像。 

输入描述:

二叉树的镜像定义：源二叉树 
    	    8
    	   /      	  6   10
    	 / \  /     	5  7 9 11
    	镜像二叉树
    	    8
    	   /      	  10   6
    	 / \  /     	11 9 7  5

 

 1 /*
 2 struct TreeNode {
 3     int val;
 4     struct TreeNode *left;
 5     struct TreeNode *right;
 6     TreeNode(int x) :
 7             val(x), left(NULL), right(NULL) {
 8     }
 9 };*/
10 class Solution {
11 public:
12     void Mirror(TreeNode *pRoot);
13 };
14 
15 void Solution::Mirror(TreeNode *pRoot)
16 {
17     if(pRoot != NULL)
18     {
19         TreeNode *temp;
20         temp = pRoot->left;
21         pRoot->left = pRoot->right;
22         pRoot->right = temp;
23         Mirror(pRoot->left);
24         Mirror(pRoot->right);
25     }
26         
27 }