1: #!/usr/bin/ruby
    2: # -*- mode: ruby -*-
    3: # $Id: ary-ruby.code,v 1.4 2004/11/13 07:41:27 bfulgham Exp $
    4: # http://www.bagley.org/~doug/shootout/
    5: # with help from Paul Brannan and Mark Hubbart
    6: 
    7: n = 9000 # Integer(ARGV.shift || 1)
    8: 
    9: x = Array.new(n)
   10: y = Array.new(n, 0)
   11: 
   12: n.times{|bi|
   13:   x[bi] = bi + 1
   14: }
   15: 
   16: (0 .. 999).each do |e|
   17:   (n-1).step(0,-1) do |bi|
   18:     y[bi] += x.at(bi)
   19:   end
   20: end
   21: # puts "#{y.first} #{y.last}"
   22: 
   23: