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pdg137/gist:5a37ebaa860cac7aeeca

Created November 6, 2014 08:33
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Regex for testing divisibility by three
Raw
gistfile1.rb
/^([147][0369]*[258]|([147][0369]*[147]|[258])([258][0369]*[147]|[0369])*([258][0369]*[258]|[147])|[0369])+$/
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