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#!/usr/bin/ruby
# -*- mode: ruby -*-
# $Id: regexmatch.ruby,v 1.2 2005-05-17 05:20:31 bfulgham Exp $
# http://shootout.alioth.debian.org/
# modified by: Jon-Carlos Rivera
re = Regexp.new(
'(?:^|[^\d\(])' + # must be preceeded by non-digit
'(?:\((\d\d\d)\)|(\d\d\d))' + # match 1 or 2: area code is 3 digits
'[ ]' + # area code followed by one space
'(\d\d\d)' + # match 3: prefix of 3 digits
'[ -]' + # separator is either space or dash
'(\d\d\d\d)' + # match 4: last 4 digits
'\D' # must be followed by a non-digit
)
num = Integer(ARGV[0] || 1)
phones = STDIN.readlines
phonenum, count = "", 0
(1..num).each do |iter|
phones.each do |line|
if line =~ re
phonenum = "(#{($1 || $2)}) #{$3}-#{$4}";
if iter == num
count += 1
puts "#{count}: #{phonenum}"
end
end
end
end
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