21 lines
699 B
C#
21 lines
699 B
C#
namespace _112._Path_Sum;
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public class Solution
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{
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public bool HasPathSum(TreeNode root, int targetSum)
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=> root != null ? Recursion(root, root.val, targetSum) : false;
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private bool Recursion(TreeNode? node, int curSum, int targetSum)
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{
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if (curSum == targetSum && node != null && node.left == null && node.right == null)
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return true;
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if (node == null)
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return false;
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bool res = false;
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if(node.left != null)
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res |= Recursion(node.left, curSum + node.left.val, targetSum);
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if (node.right != null)
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res |= Recursion(node.right, curSum + node.right.val, targetSum);
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return res;
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}
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} |