1 # The Computer Language Shootout
2 # http://shootout.alioth.debian.org
4 # contributed by jose fco. gonzalez
5 # modified by Sokolov Yura
9 def frecuency( seq,length )
10 n, table = seq.length - length + 1, Hash.new(0)
12 (0 ... length).each do |f|
13 (f ... n).step(length) do |i|
14 table[seq[i,length]] += 1
21 def sort_by_freq( seq,length )
22 n,table = frecuency( seq,length )
23 a, b, v = nil, nil, nil
24 table.sort{|a,b| b[1] <=> a[1]}.each do |v|
25 puts "%s %.3f" % [v[0].upcase,((v[1]*100).to_f/n)]
31 n,table = frecuency( seq,s.length )
32 puts "#{table[s].to_s}\t#{s.upcase}"
35 input = open(File.join(File.dirname($0), 'fasta.output.100000'), 'rb')
37 line = input.gets while line !~ /^>THREE/
40 while (line !~ /^>/) & line do
45 [1,2].each {|i| sort_by_freq( seq,i ) }
47 %w(ggt ggta ggtatt ggtattttaatt ggtattttaatttatagt).each{|s| find_seq( seq,s) }