public class Convert {

     boolean isMatch(String s1 , String s2){
        if(s1.equals(s2))
            return true;
        String  s3 = s1.concat("P");
        StringBuilder input1 = new StringBuilder();
        input1.append(s1);
        String  s4 = input1.reverse().toString();
        s4 = s4.concat("Q");
        return isMatch(s3, s2) || isMatch(s4,s2);
    }

    public static void main(String[] args) {

        String s1 = "PQQ";
        String s2 = "PQQP";
        Convert c1 = new Convert();
        boolean res = c1.isMatch(s1, s2);
        System.out.println(res);
    }
}