// go to the wall, pick up all the beepers (max one per pile)
public static void task_04()
{
	Robot temp = new Robot(1, 4, World.EAST, 0);

	if( temp.nextToABeeper() )
		temp.pickBeeper();

	while( temp.frontIsClear() )
	{
		temp.move();
		if( temp.nextToABeeper() )
			temp.pickBeeper();
	}
        if(temp.nextToABeeper())
            temp.pickBeeper();

}