recycle_refactor.rb

class Plastic
  def initialize
		@plastic_bin = []
		@plastic_types = ["num_1", "num_2", "num_3", "num_4", "num_5", "num_6", "num_7"]
	end
	def recycle_plastic(trash)
		self.plastic_bin << trash if plastic_types.include?(trash)
	end
end

class Glass
	def initialize
	@glass_bin = []
	@glass_types = ["clear", "color"]

	def recycle_glass(trash)
		self.glass_bin << trash if glass_types.include?(trash)
	end

end

class Paper
	def initialize
		@paper_bin = []
		@paper_types = ["paper", "cardboard"]
	end
	
	def recycle_paper(trash)
		self.paper_bin << trash if paper_types.include?(trash)
	end		
end

class Metal
	def initialize
		@metal_bin = []
		@metal_types = ["aluminum", "tin", "copper"]
	end

	def recycle_metal(trash)
		self.metal_bin << trash if metal_types.include?(trash)
	end	
end

class Landfill
	def initialize
		@landfill_bin = []
	end
	def landfill(trash)
		Metal.metal_types.include?(trash)
		Paper.paper_types.include?(trash)
		Glass.glass_types.include?(trash)
		Plastic.plastic_types.include?(trash)
		self.landfill_bin << trash
	end
end