Java | Leetcode Java题解之第112题路径总和

题目：

题解：

class Solution {public boolean hasPathSum(TreeNode root, int sum) {if (root == null) {return false;}if (root.left == null && root.right == null) {return sum == root.val;}return hasPathSum(root.left, sum - root.val) || hasPathSum(root.right, sum - root.val);}
}