Fun solution in elixir
def numerals(num) when num > 1000, do: "M" <> numerals(num - 1000) def numerals(num) when num > 900, do: "CM" <> numerals(num - 900) def numerals(num) when num > 500, do: "D" <> numerals(num - 500) def numerals(num) when num > 400, do: "CD" <> numerals(num - 400) def numerals(num) when num > 100, do: "C" <> numerals(num - 100) def numerals(num) when num > 90, do: "XC" <> numerals(num - 90) def numerals(num) when num > 50, do: "L" <> numerals(num - 50) def numerals(num) when num > 40, do: "XL" <> numerals(num - 40) def numerals(num) when num > 10, do: "X", <> numerals(num - 10) def numerals(num) when num > 9, do: "IX" <> numerals(num - 9) def numerals(num) when num > 5, do: "V" <> numerals(num - 5) def numerals(num) when num > 4, do: "IV" <> numerals(num - 4) def numerals(num) when num > 1, do: "I" <> numerals(num - 1) def numerals(0), do: ""
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Fun solution in elixir