problem 2

Author: lilaboc

2.rb

@@ -0,0 +1,12 @@
+fib = Enumerator.new do |yielder|
+  i = 1
+  j = 1
+  loop do 
+    i, j = j, i + j
+    yielder.yield i
+  end
+end
+p fib.take_while {|n| n < 4E6}.select{|x| x % 2 != 0 }.inject{|sum, x| sum += x}
+
+
+