bench/shootout/wordfreq.ruby

   1 #!/usr/bin/ruby
   2 # -*- mode: ruby -*-
   3 # $Id: wordfreq.ruby,v 1.2 2004-07-03 05:36:11 bfulgham Exp $
   4 # http://shootout.alioth.debian.org/
   5
   6 freq = Hash.new(0)
   7 loop {
   8     data = (STDIN.read(4095) or break) << (STDIN.gets || "")
   9     for word in data.downcase.tr_s('^A-Za-z',' ').split(' ')
  10         freq[word] += 1
  11     end
  12 }
  13 freq.delete("")
  14
  15 lines = Array.new
  16 freq.each{|w,c| lines << sprintf("%7d %s\n", c, w) }
  17 print lines.sort.reverse