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  1. Prepare
  2. Ruby
  3. Strings
  4. Ruby - Strings - Indexing
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Ruby - Strings - Indexing

  • mariocfbais
     + 0 comments
    def serial_average(n)
    "#{n[0, 3]}-#{((n[4, 5].to_f + n[10, 5].to_f) / 2).round(2)}"
end