Question

IN JAVA

Write a program that, given an integer, inserts a '*' between adjacent digits that are both even and a '-' between adjacent digits that are both odd. Zero should not be considered even or odd.

EX:

12467930

Expected Output

12*4*67-9-30

Answer 1

import java.util.Scanner;

public class InsertSymbols {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.next();
        String result = "";
        int d1, d2;
        for (int i = 0; i < s.length(); i++) {
            result += s.charAt(i);
            if (i < s.length()-1) {
                d1 = s.charAt(i)-'0';
                d2 = s.charAt(i+1)-'0';
                if (d1%2 == 0 && d2%2 == 0) {
                    result += '*';
                }
                if (d1%2 == 1 && d2%2 == 1) {
                    result += '-';
                }
            }
        }
        System.out.println(result);
    }
}