anyone know how to fix this? someone on my class discussion board said "you forgot to insert a parameter String str in" just not sure how to do that thanks

 

import java.util.Scanner;

/**

 * CS 170 Proficiency Quiz 4.

 * InsideOut2 program.

 *

 * @author Amir K

 * @version Summer 17

 */

public class InsideOut2

{  

  /**

   * Write the insideOut2() function.

   *

   * @param str an even-length String of at least 2 characters.

   * @return a String as described below.

   *

   * The function has one parameter: a String str 

   * that is at least 2 characters long and of even 

   * length. The function returns a new String where 

   * the middle two characters have been removed 

   * and placed at the end. 

   * 

   * Here some sample input and output:

   *  insideOut2 ("Carton") returns "Caonrt" // rt moved to end

   *  insideOut2 ("Hi") returns "Hi" // Hi removed and then moved to end, so no change. 

   *  insideOut2 ("Barbara Anne") returns "Barba Annera" //ra moves end.

   */

  // TODO WRITE THE FUNCTION insideOut2 HERE

  public static void main(String[] args)

  {

    System.out.println(insideOut2());

  }

  public static String insideOut2()

  {

    Scanner in = new Scanner(System.in);

    String str = in.nextLine();

    int wordLen = str.length();

    int centerLen = wordLen / 2;

    //Output

    String answer = (str.substring(0, centerLen - 1))

      + (str.substring(centerLen + 1, wordLen))

      + (str.substring(centerLen - 1, centerLen + 1));

     

    return answer;

  }

 

}

Attachments:

• 1510729834-instructions.pdf