How to break a number to individual digit

Question

I know this is very basic and the number reversal code for java is also similar but the problem I am facing is, I am not understanding how to simply break the number to digit. Please help

Input:

1234

Output:

1
2
3
4

Answer 1

The best way would be find the length of the number,

public class Break
{
    public static void main(String args[])
    {
        Scanner sc = new Scanner(System.in);
        int n= sc.nextInt();
        int res,rem,num=0;
        while(n!=0)
        {
            res = n/10;
            rem = n % 10;
            System.out.println(rem);
            n = res;
        }    
    }
}