问题
Find the maximum node in a binary tree, return the node.
Example
Given a binary tree:
1
/ \
-5 2
/ \ / \
0 3 -4 -5
return the node with value 3
.
考虑遍历二叉树来解决
java解答
/**
* Definition of TreeNode:
* public class TreeNode {
* public int val;
* public TreeNode left, right;
* public TreeNode(int val) {
* this.val = val;
* this.left = this.right = null;
* }
* }
*/
public class Solution {
/*
* @param root: the root of tree
* @return: the max node
*/
/**
* 思路
* 1,参数合法性判断
* 2,遍历二叉树,找出最大节点
*/
&nb