private Vector<Passenger> check_same_passangers(int floor,int goal)
	{
		Vector<Passenger> result = new Vector<Passenger>();
		for(int i=0;i<this.passengers.size();i++)
		{
			Passenger p = this.passengers.elementAt(i);
			if(p.check_floors(floor, goal))
				result.add(p);
		}
		
		return result;
		
	}