首页 > 代码库 > Maximum Depth of Binary Tree 二叉树的深度

Maximum Depth of Binary Tree 二叉树的深度

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.

此题是经典的求二叉树深度深度题目,可采用递归的方式,以此求每个节点的左子树深度和右子树深度,然后返回该节点左右子树深度最大的那个即为该节点的深度

具体代码如下:

 1 /** 2  * Definition for binary tree 3  * struct TreeNode { 4  *     int val; 5  *     TreeNode *left; 6  *     TreeNode *right; 7  *     TreeNode(int x) : val(x), left(NULL), right(NULL) {} 8  * }; 9  */10 class Solution {11 public:12     int maxDepth(TreeNode *root) {13         if(root == NULL)14             return 0;15             16         int nleft = maxDepth(root->left);17         int nright = maxDepth(root->right);18         19         return (nleft > nright) ? (nleft+1) : (nright+1);20     }21 };

 

Maximum Depth of Binary Tree 二叉树的深度