bench/shootout/fibo.ruby

   1 #!/usr/bin/ruby
   2 # -*- mode: ruby -*-
   3 # $Id: fibo.ruby,v 1.3 2005-04-25 19:01:38 igouy-guest Exp $
   4 # http://www.bagley.org/~doug/shootout/
   5
   6 def fib(n)
   7     if n < 2 then
   8            1
   9     else
  10            fib(n-2) + fib(n-1)
  11     end
  12 end
  13
  14 N = Integer(ARGV.shift || 1)
  15 puts fib(N)