Question

using java

LO: (Apply) Students will write loops that iterate until a condition is met.

LO: (Analyze) Students will identify edge cases from a problem statement.

In this game of volleyball, two teams compete to be the first team to score 21 points. However, to win the game, a team must also lead by two points.

For example, if team A is tied with team B (20-20) and then scores, they will only be ahead by one point (21-20). Then, if team B scores a point, the game will be tied again (21-21). Then, if either team can score two consecutive points, they will win.

Write a program that reads data about volleyball matches from standard input and then determines the outcome of the game. If the input word is "A" it means that team A scored a point. If the input word is "B" it means that team B scored a point. If the input word is "end" it means that the game ended. Calculate the scores and announce the team that won or that the game was a draw. Display the game result in this format:

Team A won! (21-14)

starter code :

import java.util.Scanner;

/*
* Determines the outcome of a volleyball game.
*/
public class Volleyball {
public static void main(String[] args) {



System.exit(0);
}
}

Answer 1

I will build a console application for this problem statement using Eclipse, you can use any IDE of your choice, the code must behave the same.

The source code is as follows,

import java.util.Scanner;

public class Volleyball {

    //declaration and initialisation of the variables that are later 
    //required in the entire lifespan of the application.

        int scoreA = 0;
        int scoreB = 0;
        int endScore = 21;
        boolean inputFlag = true;

        //add score method

        public void addScore(String team) {
                if(team.equalsIgnoreCase("A")) {
                        scoreA +=1;
                        checkDues(scoreA,scoreB);
                } else if (team.equalsIgnoreCase("B")) {
                        scoreB +=1;
                        checkDues(scoreA,scoreB);
                } else if (team.equalsIgnoreCase("end")) {
                        inputFlag = false;
                        System.out.println("Game Ended "+"Team A - "+ scoreA+ "Team B - "+scoreB);
                }
                compareScore(scoreA,scoreB,endScore);
        }

        //Check dues method

        public void checkDues(int scrA,int scrB) {
                if((scrA >= 20) && (scrB >= 20)) {
                        if((scrA == scrB)) {
                                endScore +=1;
                        }
                }
        }
        public void compareScore(int scrA,int scrB, int endScore) {     
                if((scrA == endScore) && (scrB < endScore)) {
                        System.out.println("Team A won! ("+scrA+"-"+scrB+")");
                        inputFlag = false;
                } else if((scrB == endScore) && (scrA < endScore)) {
                        System.out.println("Team B won! ("+scrA+"-"+scrB+")");
                        inputFlag = false;
                }
        }

     // main method is the entry point of the java application

        public static void main(String[] args) {
                
                Scanner input = new Scanner(System.in);

      // vb is an instance(object)of class Vollyball.
                Volleyball vb = new Volleyball(); 

                while(vb.inputFlag) {
                        System.out.println("please input the scored team");
                        String inputTeam = input.nextLine();
                        vb.addScore(inputTeam);

                        //(use the below code for debugging):
                        //System.out.println("Scores"+ vb.scoreA+","+vb.scoreB);
                } 

        }

}

Output screenshot:

From Question:

LO: (Apply) Students will write loops that iterate until a condition is met.

ANS: Here in the code you can see a while loop which is continuesly checking "inputFlag" when the game ends the "inputFlag" is set to "false" and the while loop breaks.

LO: (Analyze) Students will identify edge cases from a problem statement.

ANS: Edge cases are as follows

1. Team A winning.
2. Team B winning.
3. Manual entry of "end" .
4. Dues - special case in vollyball game.