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-2.2.1.159	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.158	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.157	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.156	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.155	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.154	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.153	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.152	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.151	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.150	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.149	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.148	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.147	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.146	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.145	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.144	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.143	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.142	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.141	tracks/ecmascript/exercises/roman-numerals/example.js
trackler-2.2.1.140	tracks/ecmascript/exercises/roman-numerals/example.js