Discussion on: Daily Challenge #209 - Roman Numerals

function romanCharToInt(c) {
    switch (c) {
        case 'I':
            return 1;
        case 'V':
            return 5;
        case 'X':
            return 10;
        case 'L':
            return 50;
        case 'C':
            return 100;
        case 'D':
            return 500;
        case 'M':
            return 1000;
    }
}

function romanToInt(s) {
    let finalSum = 0;
    let romanChars = s.split("");

    for (let i = 0; i < romanChars.length; i++) {
        if (romanChars[i + 1]) {
            if (romanCharToInt(romanChars[i]) >= romanCharToInt(romanChars[i + 1])) {
                finalSum += romanCharToInt(romanChars[i]);
            } else {
                finalSum += romanCharToInt(romanChars[i + 1]);
                finalSum -= romanCharToInt(romanChars[i]);
                i++;
            }
        } else {
            finalSum += romanCharToInt(romanChars[i]);
        }
    }

    return finalSum;
}