# File default/stair_sweeper.rb, line 24 def task() alex = StairSweeper.new(1, 1, EAST, 0) alex.set_name("Alex") alex.climb_stair() alex.pick_beeper() alex.climb_stair() alex.pick_beeper() alex.climb_stair() alex.pick_beeper() alex.turn_off() alex.display() end