题解 | #二叉树中和为某一值的路径(一)#
二叉树中和为某一值的路径(一)
https://www.nowcoder.com/practice/508378c0823c423baa723ce448cbfd0c
/**
* struct TreeNode {
* int val;
* struct TreeNode *left;
* struct TreeNode *right;
* };
*/
class Solution {
public:
/**
*
* @param root TreeNode类
* @param sum int整型
* @return bool布尔型
*/
bool hasPathSum(TreeNode* root, int sum) {
// write code here
if(root==nullptr)return false;
if(root->left==nullptr&&root->right==nullptr&&root->val==sum)return true;
return hasPathSum(root->left,sum-root->val)||hasPathSum(root->right,sum-root->val);
}
};

