motercycle-iterator.cs

public class MotercycleIterator : IVehicleIterator
{
    private string[] _motercylces;
    private int _current;
    public MotercycleIterator(string[] motercylces)
    {
        _motercylces = motercylces;
        _current = 0;
    }
    public string Current()
    {
        return _motercylces[_current];
    }

    public void First()
    {
        _current = 0;
    }

    public bool IsDone()
    {
        return _current >= _motercylces.Length;
    }

    public string Next()
    {
        return _motercylces[_current++];
    }
}