# 0226. Invert Binary Tree
###### tags: `Leetcode` `Easy` `Tree`
Link: https://leetcode.com/problems/invert-binary-tree/
## 思路
## Code

class Solution {
    public TreeNode invertTree(TreeNode root) {
        if(root==null) return null;
        TreeNode left = invertTree(root.left);
        TreeNode right = invertTree(root.right);
        root.left = right;
        root.right = left;
        return root;
    }
}