面试题19 二叉树的镜像
题目描述
操作给定的二叉树,将其变换为源二叉树的镜像。
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 if (pRoot){ 14 TreeNode *node = pRoot->left; 15 pRoot->left = pRoot->right; 16 pRoot->right = node; 17 Mirror(pRoot->left); 18 Mirror(pRoot->right); 19 } 20 } 21 };