剑指OFFER 二叉树的镜像

剑指OFFER 二叉树的镜像

深搜的变形

/*
struct TreeNode {
	int val;
	struct TreeNode *left;
	struct TreeNode *right;
	TreeNode(int x) :
			val(x), left(NULL), right(NULL) {
	}
};*/
class Solution {
public:
    queue<TreeNode*> que;
    void Mirror(TreeNode* root) {
        if(root == NULL)return;
        que.push(root);
        while(que.size()!=0)
        {
            TreeNode* node = que.front();
            que.pop();
            
            TreeNode* tmp = node->left;
            node->left = node->right;
            node->right = tmp;
                
            if(node->left != NULL)
            {
                que.push(node->left);
            }
            if(node->right != NULL)
            {
                que.push(node->right);
            }
        }
    }
};