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kolektiv/roman.js

Created February 3, 2019 22:38
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Roman Numerals
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roman.js
const conversions = [
[1000, 'M'],
[900, 'CM'],
[500, 'D'],
[400, 'CD'],
[100, 'C'],
[90, 'XC'],
[50, 'L'],
[40, 'XL'],
[10, 'X'],
[9, 'IX'],
[5, 'V'],
[4, 'IV'],
[1, 'I']
];
const convert = (arabian) => (
conversions.reduce(([ roman, arabian ], [ value, text ]) => (
[ roman + text.repeat(arabian / value), arabian % value ]
), [ '', arabian ])[0]
);
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