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---
id: a7f4d8f2483413a6ce226cac
title: Roman Numeral Converter
isRequired: true
challengeType: 5
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forumTopicId: 16044
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localeTitle: Конвертер римской цифры
---
## Description
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< section id = 'description' >
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Преобразуйте заданное число в римскую цифру. В с е < a href = "http://www.mathsisfun.com/roman-numerals.html" target = "_blank" > римские цифры< / a > должны быть указаны в верхнем регистре. Н е забудьте использовать < a href = "https://www.freecodecamp.org/forum/t/how-to-get-help-when-you-are-stuck-coding/19514" target = "_blank" > Read-Search-Ask,< / a > если вы застряли. Попробуйте подключить программу. Напишите свой собственный код.
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< / section >
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## Instructions
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< section id = 'instructions' >
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< / section >
## Tests
< section id = 'tests' >
```yml
tests:
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- text: < code > convertToRoman(2)</ code > should return "II".
testString: assert.deepEqual(convertToRoman(2), "II");
- text: < code > convertToRoman(3)</ code > should return "III".
testString: assert.deepEqual(convertToRoman(3), "III");
- text: < code > convertToRoman(4)</ code > should return "IV".
testString: assert.deepEqual(convertToRoman(4), "IV");
- text: < code > convertToRoman(5)</ code > should return "V".
testString: assert.deepEqual(convertToRoman(5), "V");
- text: < code > convertToRoman(9)</ code > should return "IX".
testString: assert.deepEqual(convertToRoman(9), "IX");
- text: < code > convertToRoman(12)</ code > should return "XII".
testString: assert.deepEqual(convertToRoman(12), "XII");
- text: < code > convertToRoman(16)</ code > should return "XVI".
testString: assert.deepEqual(convertToRoman(16), "XVI");
- text: < code > convertToRoman(29)</ code > should return "XXIX".
testString: assert.deepEqual(convertToRoman(29), "XXIX");
- text: < code > convertToRoman(44)</ code > should return "XLIV".
testString: assert.deepEqual(convertToRoman(44), "XLIV");
- text: < code > convertToRoman(45)</ code > should return "XLV"
testString: assert.deepEqual(convertToRoman(45), "XLV");
- text: < code > convertToRoman(68)</ code > should return "LXVIII"
testString: assert.deepEqual(convertToRoman(68), "LXVIII");
- text: < code > convertToRoman(83)</ code > should return "LXXXIII"
testString: assert.deepEqual(convertToRoman(83), "LXXXIII");
- text: < code > convertToRoman(97)</ code > should return "XCVII"
testString: assert.deepEqual(convertToRoman(97), "XCVII");
- text: < code > convertToRoman(99)</ code > should return "XCIX"
testString: assert.deepEqual(convertToRoman(99), "XCIX");
- text: < code > convertToRoman(400)</ code > should return "CD"
testString: assert.deepEqual(convertToRoman(400), "CD");
- text: < code > convertToRoman(500)</ code > should return "D"
testString: assert.deepEqual(convertToRoman(500), "D");
- text: < code > convertToRoman(501)</ code > should return "DI"
testString: assert.deepEqual(convertToRoman(501), "DI");
- text: < code > convertToRoman(649)</ code > should return "DCXLIX"
testString: assert.deepEqual(convertToRoman(649), "DCXLIX");
- text: < code > convertToRoman(798)</ code > should return "DCCXCVIII"
testString: assert.deepEqual(convertToRoman(798), "DCCXCVIII");
- text: < code > convertToRoman(891)</ code > should return "DCCCXCI"
testString: assert.deepEqual(convertToRoman(891), "DCCCXCI");
- text: < code > convertToRoman(1000)</ code > should return "M"
testString: assert.deepEqual(convertToRoman(1000), "M");
- text: < code > convertToRoman(1004)</ code > should return "MIV"
testString: assert.deepEqual(convertToRoman(1004), "MIV");
- text: < code > convertToRoman(1006)</ code > should return "MVI"
testString: assert.deepEqual(convertToRoman(1006), "MVI");
- text: < code > convertToRoman(1023)</ code > should return "MXXIII"
testString: assert.deepEqual(convertToRoman(1023), "MXXIII");
- text: < code > convertToRoman(2014)</ code > should return "MMXIV"
testString: assert.deepEqual(convertToRoman(2014), "MMXIV");
- text: < code > convertToRoman(3999)</ code > should return "MMMCMXCIX"
testString: assert.deepEqual(convertToRoman(3999), "MMMCMXCIX");
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```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'js-seed' >
```js
function convertToRoman(num) {
return num;
}
convertToRoman(36);
```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
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function convertToRoman(num) {
var ref = [['M', 1000], ['CM', 900], ['D', 500], ['CD', 400], ['C', 100], ['XC', 90], ['L', 50], ['XL', 40], ['X', 10], ['IX', 9], ['V', 5], ['IV', 4], ['I', 1]];
var res = [];
ref.forEach(function(p) {
while (num >= p[1]) {
res.push(p[0]);
num -= p[1];
}
});
return res.join('');
}
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```
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< / section >