gistfile1.rb

#!/usr/bin/ruby

def sleep_sort(a)
  threads = []
  a.each do |e|
    threads << Thread.new do
      sleep e
      puts e
    end
  end
  threads.each { |t| t.join }
end

a = [2, 6, 7, 1, 3, 10, 4, 8]
sleep_sort(a)

exit