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Commify numbers

This is just the Ruby version of a known regular expression
to get comma-formatted numbers.


numbers = "10000000 1.345 -91245555.45 +6788876.224334 -2321232" 

numbers.reverse!
numbers.gsub!(/(\d\d\d)(?=\d)(?!\d*\.)/, '\1,')
puts numbers.reverse!

to ruby regex string number commify by ntk on Feb 17, 2006
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