Contents

function toRoman(number) {
  let result = '';
  const mappings = [
    { arabic: 1000, roman: 'M' },
    { arabic: 900, roman: 'CM' },
    { arabic: 500, roman: 'D' },
    { arabic: 400, roman: 'CD' },
    { arabic: 100, roman: 'C' },
    { arabic: 90, roman: 'XC' },
    { arabic: 50, roman: 'L' },
    { arabic: 40, roman: 'XL' },
    { arabic: 10, roman: 'X' },
    { arabic: 9, roman: 'IX' },
    { arabic: 5, roman: 'V' },
    { arabic: 4, roman: 'IV' },
    { arabic: 1, roman: 'I' },
  ];

  mappings.forEach((mapping) => {
    while (number >= mapping.arabic) {
      result += mapping.roman;
      number -= mapping.arabic;
    }
  });

  return result;
}

export default toRoman;

Version data entries

185 entries across 185 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.179	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.178	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.177	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.176	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.175	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.174	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.173	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.172	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.171	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.170	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.169	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.167	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.166	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.165	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.164	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.163	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.162	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.161	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.160	tracks/ecmascript/exercises/roman-numerals/example.js