标签:ret 二叉树 code null val -o ref dep tree node
/**
* Definition for a binary tree node.
* struct TreeNode {
* int val;
* TreeNode *left;
* TreeNode *right;
* TreeNode(int x) : val(x), left(NULL), right(NULL) {}
* };
*/
class Solution {
public:
int minDepth(TreeNode* root) {
if (!root) return 0;
if (!root->left && !root->right) return 1;
if (root->left && root->right) return min(minDepth(root->left), minDepth(root->right)) + 1;
if (root->left) return minDepth(root->left) + 1;
return minDepth(root->right) + 1;
}
};
标签:ret 二叉树 code null val -o ref dep tree node
原文地址:https://www.cnblogs.com/clown9804/p/13380272.html