public static bool test(int n, string v1, string v2) {
     var bodies = new NBodySystem();
     if (!v1.equals("" + bodies.energy()))
     	return false;
     for (int i = 0; i < n; ++i)
        bodies.advance(0.01);
     return v2.equals("" + bodies.energy());
 }
    public static bool test(int n, string v1, string v2)
    {
        var bodies = new NBodySystem();

        if (!v1.equals("" + bodies.energy()))
        {
            return(false);
        }
        for (int i = 0; i < n; ++i)
        {
            bodies.advance(0.01);
        }
        return(v2.equals("" + bodies.energy()));
    }