【剑指offer】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。

输入描述

题解

/**
public class TreeNode {
    int val = 0;
    TreeNode left = null;
    TreeNode right = null;
 
    public TreeNode(int val) {
        this.val = val;
 
    }
 
}
*/
public class Solution {
    public void Mirror(TreeNode root) {
        if(root == null)
            return;
        TreeNode temp = root.left;
        root.left = root.right;
        root.right = temp;
        Mirror(root.left);
        Mirror(root.right);
    }
}