Question

How to write an algorithm that adds the odd digits of one number to the end of a second number in Java

Answer 1

public class AddsOddDigitsIfNumberToOtherNumber_Java {
    public static void main(String[] args) {
        int n = 12734, second_n = 100;
        
        System.out.println(addOddDigits(n, second_n));
    }

    public static int addOddDigits(int n, int second_n) {
        int multiply = 1, odd = 0;

        while (n != 0) {
            if (n % 2 != 0) {
                odd += (n % 10) * multiply;
                multiply *= 10;
            }

            n = n / 10;
        }

        return second_n * multiply + odd;
    }
}


/*
run:
   
100173
 
*/

 

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