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

时间:2014-12-18 20:28:05      阅读:214      评论:0      收藏:0      [点我收藏+]

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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

标签:des   style   blog   ar   io   color   sp   for   java   

原文地址:http://www.cnblogs.com/pku-min/p/4172572.html

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