Please explain the following code in words/java doc public static void main(String args[]){ int input; Scanner scan = new Scanner(System. in); System. out. println("Input Number= "); input = scan. nextInt(); System. out. println("Reverse = "+reverseNum(input)); } public static int reverseNum(int num) { int reverse =0; while(num != 0){ reverse *= 10; reverse += num%10; num /= 10; } return reverse; } }