Leetcode 104. Maximum Depth of Binary Tree
104. Maximum Depth of Binary Tree
- Total Accepted: 157320
- Total Submissions:323303
- Difficulty: 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.
思路:递归求最长子树深度。可以参考姐妹题Leetcode 111. Minimum Depth of Binary Tree
代码:
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){ 14 return 0; 15 } 16 int left=maxDepth(root->left),right=maxDepth(root->right); 17 return max(left,right)+1; 18 } 19 };
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