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Copy path1315-SumOfNodesWithEvenValuedGrandparent.cs
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1315-SumOfNodesWithEvenValuedGrandparent.cs
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//-----------------------------------------------------------------------------
// Runtime: 112ms
// Memory Usage: 33.7 MB
// Link: https://leetcode.com/submissions/detail/360408838/
//-----------------------------------------------------------------------------
namespace LeetCode
{
/**
* Definition for a binary tree node.
* public class TreeNode {
* public int val;
* public TreeNode left;
* public TreeNode right;
* public TreeNode(int val=0, TreeNode left=null, TreeNode right=null) {
* this.val = val;
* this.left = left;
* this.right = right;
* }
* }
*/
public class _1315_SumOfNodesWithEvenValuedGrandparent
{
public int SumEvenGrandparent(TreeNode root)
{
return SumEvenGrandparent(root, 1, 1);
}
private int SumEvenGrandparent(TreeNode node, int parentValue, int grandparentValue)
{
if (node == null) return 0;
return SumEvenGrandparent(node.left, node.val, parentValue) + SumEvenGrandparent(node.right, node.val, parentValue)
+ (grandparentValue % 2 == 0 ? node.val : 0);
}
}
}