ASCII mezi znaky

import java.util.Scanner;
 
public class ASCIICviceni­{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
 
        char o = a.charAt(0);
        char p = b.charAt(0);
 
        int x = (int)o;
        int y = (int)p;
 
        if(x < y){
            for(int i = x + 1; i < y; i++){
                System.out.println((char)i);
            }
        }else{
            for(int i = y + 1; i < x; i++){
                System.out.println((char)i);
            }
        }
    }
}