releu · January 5, 2012 09:45
diff --git a/gistfile1.rb b/gistfile1.rb
 class Array
  def sum
    inject(0) { |s, i| s + i }
  end
 end

 array = [1, 2]
 while array.last < 4000000
  array << array[-2, 2].sum
 end 

 puts array.select(&:even?).sum
	class Array
	def sum
	inject(0) { \|s, i\| s + i }
	end
	end

	array = [1, 2]
	while array.last < 4000000
	array << array[-2, 2].sum
	end

	puts array.select(&:even?).sum