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ruby--ruby/benchmark/bm_so_reverse_complement.rb

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#!/usr/bin/ruby
# The Great Computer Language Shootout
# http://shootout.alioth.debian.org/
#
# Contributed by Peter Bjarke Olsen
# Modified by Doug King
seq=Array.new
def revcomp(seq)
seq.reverse!.tr!('wsatugcyrkmbdhvnATUGCYRKMBDHVN','WSTAACGRYMKVHDBNTAACGRYMKVHDBN')
stringlen=seq.length
0.step(stringlen-1,60) {|x| print seq.slice(x,60) , "\n"}
end
input = open(File.join(File.dirname($0), 'fasta.output.2500000'), 'rb')
while input.gets
if $_ =~ />/
if seq.length != 0
revcomp(seq.join)
seq=Array.new
end
puts $_
else
$_.sub(/\n/,'')
seq.push $_
end
end
revcomp(seq.join)