06. Barcode Generator

package examPrep;

import java.util.Scanner;

public class P06BarcodeGenerator {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String first = scanner.nextLine();
        String second = scanner.nextLine();

        //2345
        //6789
        for (int i = first.charAt(0); i <= second.charAt(0); i++) {
            if (i % 2 == 0) continue;
            for (int j = first.charAt(1); j <= second.charAt(1); j++) {
                if (j % 2 == 0) continue;
                for (int k = first.charAt(2); k <= second.charAt(2); k++) {
                    if (k % 2 == 0) continue;
                    for (int l = first.charAt(3); l <= second.charAt(3); l++) {
                        if (l % 2 == 0) continue;

                        System.out.printf("%c%c%c%c ", i, j, k, l);

//                        if (i % 2 != 0 &&
//                        j % 2 != 0 &&
//                        k % 2 != 0 &&
//                        l % 2 != 0) {
//                            System.out.printf("%c%c%c%c ", i, j, k, l);
//                        }
                    }
                }
            }
        }
    }
}