public bool Equals(City obj)
{
return coordinate.Equals(obj.coordinate);
}
private double Distance(City city)
{
return (double)Math.Sqrt(Math.Abs((Math.Pow(coordinate.X, 2) - Math.Pow(city.X, 2)))
+ Math.Abs((Math.Pow(coordinate.Y, 2) - Math.Pow(city.Y, 2))));
}
private double Distance(City a, City b)
{
return Math.Sqrt(
Math.Pow(a.X - b.X, 2) +
Math.Pow(a.Y - b.Y, 2)
);
}