public static int SumTree(SumTheTreeNode root)
{
if (root == null)
{
return(0);
}
int sum = root.Value;
sum += SumTree(root.Left);
sum += SumTree(root.Right);
return(sum);
}
public SumTheTreeNode(int value, SumTheTreeNode left = null, SumTheTreeNode right = null)
{
Value = value;
Left = left;
Right = right;
}
public int Test(SumTheTreeNode root) => Kata.SumTree(root);