5.27 LAB*: Program: Soccer team roster (Vectors) This program will store roster and rating information for a soccer team. Coaches rate players during tryouts to ensure a balanced team.
(1) Prompt the user to input five pairs of numbers: A player's jersey number (0 - 99) and the player's rating (1 - 9). Store the jersey numbers in one int vector and the ratings in another int vector. Output these vectors (i. e., output the roster). (3 pts)
Ex:
Enter player 1's jersey number:
84
Enter player 1's rating:
7
Enter player 2's jersey number:
23
Enter player 2's rating:
4
Enter player 3's jersey number:
4
Enter player 3's rating:
5
Enter player 4's jersey number:
30
Enter player 4's rating:
2
Enter player 5's jersey number:
66
Enter player 5's rating:
9
ROSTER
Player 1 -- Jersey number: 84, Rating: 7
Player 2 -- Jersey number: 23, Rating: 4
...
(2) Implement a menu of options for a user to modify the roster. Each option is represented by a single character. The program initially outputs the menu, and outputs the menu after a user chooses an option. The program ends when the user chooses the option to Quit. For this step, the other options do nothing. (2 pts)
Ex:
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit
Choose an option:
(3) Implement the "Output roster" menu option. (1 pt)
Ex:
ROSTER
Player 1 -- Jersey number: 84, Rating: 7
Player 2 -- Jersey number: 23, Rating: 4
...
(4) Implement the "Add player" menu option. Prompt the user for a new player's jersey number and rating. Append the values to the two vectors. (1 pt)
Ex:
Enter a new player's jersey number:
49
Enter the player's rating:
8
(5) Implement the "Delete player" menu option. Prompt the user for a player's jersey number. Remove the player from the roster (delete the jersey number and rating). (2 pts)
Ex:
Enter a jersey number:
4
(6) Implement the "Update player rating" menu option. Prompt the user for a player's jersey number. Prompt again for a new rating for the player, and then change that player's rating. (1 pt)
Ex:
Enter a jersey number:
23
Enter a new rating for player:
6
(7) Implement the "Output players above a rating" menu option. Prompt the user for a rating. Print the jersey number and rating for all players with ratings above the entered value. (2 pts)
Ex:
Enter a rating:
5

Explanation:

The following code is written in Java and loops five times asking for the desired inputs from the user and saves that information in two Vectors named jerseyNumber and ratings. Then creates a while loop for the menu and a seperate method for each of the options...

import java.util.Scanner;

import java.util.Vector;

class {

   static Scanner in = new Scanner(System.in);

   static Vector<Integer> jerseyNumber = new Vector<>();

   static Vector<Integer> ratings = new Vector<>();

   public static void main(String[] args) {

       for (int x = 0; x < 5; x++) {

           System.out.println("Enter player " + (x+1) + "'s jersey number:");

           jerseyNumber.add(in.nextInt());

           System.out.println("Enter player " + (x+1) + "'s rating:");

           ratings.add(in.nextInt());

       }

       boolean reloop = true;

       while (reloop == true) {

           System.out.println("Menu");

           System.out.println("a - Add player");

           System.out.println("d - Remove player");

           System.out.println("u - Update player rating");

           System.out.println("r - Output players above a rating");

           System.out.println("o - Output roster");

           System.out.println("q - Quit");

           char answer = in.next().charAt(0);

           switch (answer) {

               case 'a': addPlayer();

                   break;

               case 'd': removePlayer();

                   break;

               case 'u': updatePlayer();

                   break;

               case 'r': outputRating();

                   break;

               case 'o': outputRoster();

                   break;

               case 'q': System.exit(0);

                   reloop = false;

                   break;

           }

       }

   }

   public static void addPlayer() {

       System.out.println("Enter player's jersey number:");

       jerseyNumber.add(in.nextInt());

       System.out.println("Enter player's rating:");

       ratings.add(in.nextInt());

   }

   public static void removePlayer() {

       System.out.println("Enter Jersey number:");

       int number = in.nextInt();

       for (int x = 0; x < jerseyNumber.size(); x++) {

           if (jerseyNumber.get(x) == number) {

               jerseyNumber.remove(x);

               ratings.remove(x);

           }

       }

   }

   public static void updatePlayer() {

       System.out.println("Enter Jersey number:");

       int number = in.nextInt();

       System.out.println("Enter new Rating:");

       int rating = in.nextInt();

       for (int x = 0; x < jerseyNumber.size(); x++) {

           if (jerseyNumber.get(x) == number) {

               ratings.set(x, rating);

           }

       }

   }

   public static void outputRating() {

       System.out.println("Enter Rating:");

       int rating = in.nextInt();

       for (int x = 0; x < ratings.size(); x++) {

           if (ratings.get(x) >= rating) {

               System.out.println(jerseyNumber.get(x));

           }

       }

   }

   public static void outputRoster() {

       for (int x = 0; x < jerseyNumber.size(); x++) {

           System.out.println("Player " + (x+1) + " -- Jersey number: " + jerseyNumber.get(x) + ", Rating: " + ratings.get(x));

       }

   }

}

which functions return a valid value without any arguments?

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