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16 lines
581 B
JavaScript
16 lines
581 B
JavaScript
function integer_to_roman(num) {
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if (typeof num !== 'number')
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return false;
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var digits = String(+num).split(""),
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key = ["","C","CC","CCC","CD","D","DC","DCC","DCCC","CM",
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"","X","XX","XXX","XL","L","LX","LXX","LXXX","XC",
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"","I","II","III","IV","V","VI","VII","VIII","IX"],
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roman_num = "",
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i = 3;
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while (i--)
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roman_num = (key[+digits.pop() + (i * 10)] || "") + roman_num;
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return Array(+digits.join("") + 1).join("M") + roman_num;
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}
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console.log(integer_to_roman(27));
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