leetcode 226. Invert Binary Tree

Posted 2021-01-06 去做点事情

 

class Solution {
public:
    TreeNode* invertTree(TreeNode* root) {
        if(root == NULL)
            return NULL;
        TreeNode* tmp = invertTree(root->left);
        root->left = invertTree(root->right);
        root->right = tmp;
        return root;
    }
};