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dchentech/format_big_number_with_comma.rb

Created October 14, 2011 09:33
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逗号分割大整数
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format_big_number_with_comma.rb
# http://www.justskins.com/forums/format-number-with-comma-37369.html
n.to_s.reverse.gsub(/...(?=.)/,'\&,').reverse
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