12 lines
453 B
Plaintext
12 lines
453 B
Plaintext
file = hd(System.argv)
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case File.read(file) do
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{:ok, binary} -> String.upcase(binary)
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|> String.codepoints
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|> Enum.filter(fn c -> c =~ ~r/[A-Z]/ end)
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|> Enum.reduce(Map.new, fn c,acc -> Dict.update(acc, c, 1, &(&1+1)) end)
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|> Enum.sort_by(fn {_k,v} -> -v end)
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|> Enum.each(fn {k,v} -> IO.puts "#{k} #{v}" end)
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{:error, reason} -> IO.inspect reason
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end
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