[Resolved] Splitting an Integer into parts?

[The Hobo]

Let's say I have an integer, greater than 10...can be anything valid for int (10, 100, 1000, etc).

I need to split that number and get the last digit (0 in all the examples above)...so:

int x = 42;
int y = 422;

for x, I need to separate it into 4 and 2, and for y 42 and 2. I want to do this without casting to a string, if possible.

What I have to do is right a program that does multiplication "by hand", so I need to take the last digit, and carry the rest over.

Hope I explained it well enough to follow. Thanks in advance.

[Shell]

This is what I came up with, seems to work

import java.util.Vector;

public class DivideTest
{
    public static void main(String arg[])
    {
        Vector digits = new Vector();
        // Some variables
        int number     = 1234567;
        int digit    = 0;
        int divider    = 10;
        int sum        = 0;
        
        while(true){
            digit = number%divider;
            digit-= sum;
            sum+=digit;

            if(digit > 10) digit=digit/(divider/10);

            digits.addElement(new Integer(digit));

            divider=divider*10;

            if(divider>number) break;
        }
        // Process the last digit
        digit=number-sum;
        digit=digit/(divider/10);
        digits.addElement(new Integer(digit));

        Integer curInt;
        // Show the digits in the console
        for(int i=0;i<digits.size();i++){
            curInt = (Integer) (digits.elementAt(i));
            System.out.println("Item " + i + ":" + curInt.intValue());
        }
    }


} 

[The Hobo]

I figured this out. Say the number is 54.

54 % 10 = 4;
54 / 10 = 5;

Seems to work beautifully.

[Shell]

Yeah, that's what my code does aswell, but it does it for any number of digits

[The Hobo]

Originally posted by Shell
Yeah, that's what my code does aswell, but it does it for any number of digits

My method works for any number of digits as well:

class test {
    public static void main(String[] args) {
        System.out.println(144 % 10);
        System.out.println(144 / 10);
        System.out.println(142343 % 10);
        System.out.println(142343 / 10);
    }
}

[Shell]

Oh, didn't read the entire post I gues, I thought you wanted all digits separatly, sorry about that

[The Hobo]

Originally posted by Shell
Oh, didn't read the entire post I gues, I thought you wanted all digits separatly, sorry about that

Oh no. Sorry if I wasn't clear on it. If I ever need code to do that, though, I know where to look. Thanks.