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leetcode----------Maximum Depth of Binary Tree

题目

Maximum Depth of Binary Tree

通过率44.2%
难度Easy

Given a binary tree, find its maximum depth.

The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.

 

 题目比较简单,采用递归算法分别求左右子树,最后别忘了+1;

 java代码:

 

/** * Definition for binary tree * public class TreeNode { *     int val; *     TreeNode left; *     TreeNode right; *     TreeNode(int x) { val = x; } * } */public class Solution {    public int maxDepth(TreeNode root) {        if(root==null) return 0;        else        {            int leftMax=maxDepth(root.left);            int rightMax=maxDepth(root.right);            return Math.max(leftMax,rightMax)+1;        }    }}

 

leetcode----------Maximum Depth of Binary Tree