/// <summary>
/// Print the solution to the console. This is a method that is used for debug.
/// </summary>
/// <param name="end"></param>
private void printSolution(WorldState end)
{
int step = 0;
Console.WriteLine("solution back to front");
Console.WriteLine("------------------------------\n");
while (end != null)
{
Console.WriteLine("step " + step);
Console.WriteLine(end.ToString());
step++;
end = end.prevStep;
}
}
