Roman Numeral Converter

最新推荐文章于 2021-01-16 12:40:49 发布

原创最新推荐文章于 2021-01-16 12:40:49 发布 · 391 阅读

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本文介绍了一个将阿拉伯数字转换为罗马数字的JavaScript函数。通过定义一个二维数组来映射阿拉伯数字到罗马数字，此函数实现了从1到3999之间的数字转换。

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Roman Numeral Converter
把数字转换成罗马数字

转换规则


function convertToRoman(num) {
  var a=[["","I","II","III","IV","V","VI","VII","VIII","IX"],  
         ["","X","XX","XXX","XL","L","LX","LXX","LXXX","XC"],  
         ["","C","CC","CCC","CD","D","DC","DCC","DCCC","CM"],
         ["", "M", "MM", "MMM"]];  
  return num.toString().split('').reverse().map((cur, i) => {
    return a[i][cur];
  }).reverse().join('');
}

convertToRoman(36);