LeetCode 104 Maximum Depth of Binary Tree

Posted 2020-08-15 SillyVicky

Problem:

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.

Summary:

求二叉树的深度。

 1 /**
 2  * Definition for a binary tree node.
 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) return 0;
14         
15         int leftDep = maxDepth (root->left);
16         int rightDep = maxDepth (root->right);
17         
18         return leftDep > rightDep ? leftDep + 1 : rightDep + 1;
19     }
20 };