Test case fail ( wrong ans)

#1

import java.util.*;

public class Main {

static int count=0;

public static void main(String[] args) {

     Scanner s=new Scanner(System.in);

     int i;

     while(s.hasNextInt()) {

         int tc=s.nextInt();

         for(i=1;i<tc+1;i++) {

             int n=s.nextInt();

             classAssignment(n," ");

            System.out.println("#"+i+" : "+count);

             

         }

        

     }

}    

public static void classAssignment(int n,String result) {

    if(result.length()==n) 

    {

        count++;

        return;

    }

    if(result.charAt(result.length()-1)=='b' && result.charAt(result.length()-2)=='b' ) {

        return;

    }

            

    classAssignment(n,result+"a");

    classAssignment(n,result+"b");

}

}

#2

Hey @Par1hsharma
your doing wrong
simple debug your code for custom input
and after every test case set count =0;
simple do this
public static int answer(int n) {
if (n == 2 || n == 1) {
return n+1;
}
return answer(n - 1) + answer(n - 2);
}