sum = (...args) => {
    return args.filter(num => num % 2 !== 0).reduce((acc, num) => acc + num, 0);
}
sum = (...args) => {
    let total = 0;
    for (let i = 0; i < args.length; i++) {
        if (args[i] % 2 !== 0) {
            total += args[i];
        }
    }
    return total;
}