hrstt · August 30, 2011 08:17
diff --git a/string_array_outer_product.rb b/string_array_outer_product.rb
 # Array#map
 def cross(a, b)
  a.map{|elem_a| b.map{|elem_b| elem_a.to_s + elem_b.to_s}}.flatten
 end

 # Array#product
 def cros(a,b)
  a.product(b).map{|elem| elem.join()}
 end
	# Array#map
	def cross(a, b)
	a.map{\|elem_a\| b.map{\|elem_b\| elem_a.to_s + elem_b.to_s}}.flatten
	end

	# Array#product
	def cros(a,b)
	a.product(b).map{\|elem\| elem.join()}
	end