function myFunc() {
    return Array.prototype.slice.call(arguments);
    // args is now a real Array, so can use the sort() method from Array
}
console.log(myFunc('USA', 'UK', 'India'));
console.log(myFunc('USA', 'UK', 'India').sort());

// Will output =>
// [ 'USA', 'UK', 'India' ]
// [ 'India', 'UK', 'USA' ]