Question

1. Write a method, reverseDigits that takes an integer as parameter and returns the number with the digits reversed. Also, write a program to test your function.

Here is a sample of input/output:

Enter an integer: 4567

4567 after digits reversed = 7654

Enter an integer: -45

-45 after digits reversed = -54

Enter an integer: 980

980 after digits reversed = 89

Answer 1

Hey, @MIH,

You can follow this:

public class ReverseNumber {

    public static void main(String[] args) {

        int num = 4567, reversed = 0;

        while(num != 0) {
            int digit = num % 10;
            reversed = reversed * 10 + digit;
            num /= 10;
        }

        System.out.println("Reversed Number: " + reversed);
    }
}

Reversed Number: 7654

I hope this helps.