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#!/usr/bin/env ruby
require 'zipf'
def usage
STDERR.write "merge_files <file>+\n"
exit 1
end
usage if ARGV.size==0
files = ARGV
hashes = []
files.each { |i|
hashes.push Hash.new
hashes.last.default = 0
f = ReadFile.new i
while line = f.gets
hashes.last[line.strip] += 1
end
f.close
}
hashes.each { |h|
h.each { |k,v|
counts = []
hashes.each { |j| counts.push j[k]; j.delete k }
counts.max.times { puts k }
}
}
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