Practice-Questions-of-java/Hollowbutterfly.java at main · IshikaSahu24/Practice-Questions-of-java · GitHub

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public class Hollowbutterfly {

        public static void main(String args[])
        {   int a = 1;
            int b = 9;
            int n = 5;
            for(int i = 1; i <= n ; i++)
            {
                    for(int j = 1; j <= i ; j++){
                       if(i == j || j == 1 ){
                         System.out.print("@ ");
                    }
                    else{
                        System.out.print("  ");
                    }
                }
                    for(int  k = a; k <= 2*(n-1); k++){
                        System.out.print("  ");
                    }
                     for(int j = 1; j <= i; j++){
                        if(i == j || j == 1 ){
                         System.out.print("@ ");
                        }
                        else{
                            System.out.print("  ");
                        }
                     }
                System.out.println();
                a= a+2;
                 }
      for(int i = n; i >= 1; i-- ){

             for(int j = 1; j <= i ; j++){
                if(i == j ||   j == n || j == 1){
               System.out.print("@ ");
            }
            else{
                System.out.print("  ");
            }
        }
            for(int  k = b; k <= 2*(n-1); k++){
                System.out.print("  ");
            }
           for(int j = 1; j <= i; j++){
            if(i == j || j == n || j == 1){
                 System.out.print("@ ");
            }
            else{
                System.out.print("  ");
            }
        }
                 System.out.println();
                 b= b-2;
            }
           }


}