20 lines
514 B
JavaScript
20 lines
514 B
JavaScript
/**
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* @param {number} num
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* @return {string}
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*/
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export const intToRoman = function (num) {
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const nums = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
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const chars = ['M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I']
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let result = ''
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while (num) {
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if (num >= nums[0]) { // 3 > 1 => 2 > 1 => 1 == 1
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result += chars[0] // I => II => III
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num -= nums[0] // 3 -> 2 => 2 -> 1 => 1 => 0
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} else {
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nums.shift()
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chars.shift()
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}
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}
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return result
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}
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