二叉树的镜像

Desicription

操作给定的二叉树,将其变换为源二叉树的镜像。

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

Solution

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/*
struct TreeNode {
int val;
struct TreeNode *left;
struct TreeNode *right;
TreeNode(int x) :
val(x), left(NULL), right(NULL) {
}
};*/
class Solution {
private:
void Modify(TreeNode* pRoot) {
if(!pRoot) {
return ;
}
TreeNode* tempNode = pRoot->left;
pRoot->left = pRoot->right;
pRoot->right = tempNode;
Modify(pRoot->left);
Modify(pRoot->right);
}
public:
void Mirror(TreeNode *pRoot) {
Modify(pRoot);
}
};