30_convert_to_roman.js

// Convert a numbber to roman number

function convertToRoman(num){
    var romanToNum = {
        M : 1000,
        CM: 900,
        D: 500,
        CD: 400,
        C: 100,
        XC: 90,
        L: 50,
        XL: 40,
        X: 10,
        IX: 9,
        V: 5,
        IV: 4,
        I: 1
    };

    var roman = "";

    for (var key in romanToNum){
        while(num >= romanToNum[key]){
            roman += key;
            num -= romanToNum[key];
        }
    }

    return roman;
}


console.log(convertToRoman(3));
console.log(convertToRoman(8))
console.log(convertToRoman(17))