Convert Arabic numbers to Roman notation

algo_mid_three.js

// Conver Arabic to Roman Numbers

function romanConventerBasic(number) {
  // 1. Create array with roman numbers and arabic equivalents
  const decimalValue = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1];
  const romanValue = ['M','CM','D','CD','C','XC','L','XL','X','IX','V','IV','I'];

  // 2. New variable that will be romanized number
  let romanized = '';

  // 3. Map through numbers array and comapre against your number
  decimalValue.map((a, i) => {
    // 4. As long as your number is bigger than value in an array
    while (a <= number) {
      // 5. Add corresponding roman character to the string
      romanized += romanValue[i];
      // 6. And reduce your number by a value from arabic array.
      number -= a;
    }
  });

  return romanized;
}

console.log(romanConventerBasic(2345)); // MMCCCXLV