import java.util.*;
/*
- public class TreeNode {
- int val = 0;
- TreeNode left = null;
- TreeNode right = null;
- public TreeNode(int val) {
-
this.val = val;
- }
- } */
public class Solution { /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param pRoot TreeNode类 * @return TreeNode类 */ //把这个当成一个交换问题就成了 public TreeNode Mirror (TreeNode pRoot) { if(pRoot == null) return null; TreeNode temp = pRoot.left; pRoot.left = pRoot.right; pRoot.right = temp;
Mirror(pRoot.left);
Mirror(pRoot.right);
return pRoot;
}
}