static void Main(string[] args)
{
var values = new List <int>()
{
8, 7, 13, 6, 2, 5, 1, 9, 11, 3, 4, 10
};
int outputInt;
outputInt = Q3.BSTdistance(values, 10, 2);
Console.WriteLine(outputInt);
Console.ReadKey();
}