More iterator examples

public class MyDiner{

	private string[] _menuitems;
	private int _position;
	private IEnumerable<string>[] _subMenus;

	private int _innerPosition;
	private IEnumerable _currentIterator;

	public MyDiner(ICollection<string> subMenus) : IEnumerable{
		_position = 0;
		_innerPosition = 0;
		_menuItems = new string[] {"Coffee", "Latte machiato", "Cappuchino"};
		_submenus = submenus
		_currentIterator = _submenus[_innerPosition].Iterator();
	}


	public bool HasNext(){
		return _innerPosition == _submenus.length - 1 || _currentIterator.HasNext();
	}


	public string Next(){
		if(_position < _menuitems.length){
			_position ++;
			return = __menuItems[_position - 1];
		}
		else if(_currentIterator.HasNext){
			return _currentIterator.Next();
		}
		else if (_innerPosition < _submenus.length -1){
			_innerPosition ++;
			_currentIterator = _submenus[_innerPosition].Iterator();
			return _currentIterator.Next();
		}
		else {
			thow new IllegalOperationException("I'm out of elements!");
		}
	}



}