Question

It’s almost election day and the election officials need a program to help tally election results. There are two candidates for office—Polly Tichen and Ernest Orator. The program’s job is to take as input the number of votes each candidate received in each voting precinct and find the total number of votes for each. The program should print out the final tally for each candidate—both the total number of votes each received and the percent of votes each received. Clearly a loop is needed. Each iteration of the loop is responsible for reading in the votes from a single precinct and updating the tallies. A skeleton of the program is in the file Election.java. Open a copy of the program in your text editor and do the following. 1. Add the code to control the loop. You may use either a while loop or a do...while loop. The loop must be controlled by asking the user whether or not there are more precincts to report (that is, more precincts whose votes need to be added in). The user should answer with the character y or n though your program should also allow uppercase repsonses. The variable response (type String) has already been declared. 2. Add the code to read in the votes for each candidate and find the total votes. Note that variables have already been declared for you to use. Print out the totals and the percentages after the loop. 3. Test your program to make sure it is correctly tallying the votes and finding the percentages AND that the loop control is correct (it goes when it should and stops when it should). 4. The election officials want more information. They want to know how many precincts each candidate carried (won). Add code to compute and print this. You need three new variables: one to count the number of precincts won by Polly, one to count the number won by Ernest, and one to count the number of ties. Test your program after adding this code.

Code Skeleton:

// Election.java

// This file contains a program that tallies the results of

// an election. It reads in the number of votes for each of

// two candidates in each of several precincts. It determines

// the total number of votes received by each candidate, the

// percent of votes received by each candidate, the number of

// precincts each candidate carries, and the

// maximum winning margin in a precinct.

// ************************************************************

import java.util.Scanner;

public class Election

{

public static void main (String[] args)

{

int votesForPolly; // number of votes for Polly in each precinct

int votesForErnest; // number of votes for Ernest in each precinct

int totalPolly; // running total of votes for Polly

int totalErnest; // running total of votes for Ernest String response;

// answer (y or n) to the "more precincts" question

Scanner scan = new Scanner(System.in);

System.out.println ();

System.out.println ("Election Day Vote Counting Program");

System.out.println ();

// Initializations

// Loop to "process" the votes in each precinct

// Print out the results

}
}

Please solve this for me. I've been stuck for the last hour, much appreciated thank you!

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

// Election.java

import java.util.Scanner;

public class Election

{

      public static void main(String[] args)

      {

            int votesForPolly; // number of votes for Polly in each precinct

            int votesForErnest; // number of votes for Ernest in each precinct

            int totalPolly; // running total of votes for Polly

            int totalErnest; // running total of votes for Ernest

            String response; // answer (y or n) to the "more precincts" question

            int precinctsPolly; // number of precincts carried by Polly

            int precinctsErnest; // number of precincts carried by Ernest

            int precinctsTie; // number of precincts tied (same votes)

            int maxWinMargin; // maximum winning margin in a precinct

            int winMargin; // to store win margin of a precinct

            double percentPolly; // percentage of votes for polly

            double percentErnest; // percentage of votes for ernest

            Scanner scan = new Scanner(System.in);

            System.out.println();

            System.out.println("Election Day Vote Counting Program");

            System.out.println();

            // Initializations

            totalPolly = 0;

            totalErnest = 0;

            precinctsPolly = 0;

            precinctsErnest = 0;

            precinctsTie = 0;

            response = "y";

            maxWinMargin = 0;

            // Loop to "process" the votes in each precinct

            while (response.equalsIgnoreCase("y")) {

                  // asking and reading votes received by each candidate in current

                  // precinct

                  System.out.print("Enter votes for Polly: ");

                  votesForPolly = scan.nextInt();

                  System.out.print("Enter votes for Ernest: ");

                  votesForErnest = scan.nextInt();

                  // updating totals

                  totalPolly += votesForPolly;

                  totalErnest += votesForErnest;

                  // finding winner of this precinct

                  if (votesForPolly > votesForErnest) {

                        // Polly won

                        precinctsPolly++;

                        // finding win margin

                        winMargin = votesForPolly - votesForErnest;

                  } else if (votesForPolly < votesForErnest) {

                        // Ernest won

                        precinctsErnest++;

                        // finding win margin

                        winMargin = votesForErnest - votesForPolly;

                  } else {

                        // tie

                        precinctsTie++;

                        winMargin = 0;

                  }

                  // updating maxWinMargin if current winMargin is bigger than current

                  // maximum

                  if (winMargin > maxWinMargin) {

                        maxWinMargin = winMargin;

                  }

                  // asking user if he likes to add more precincts

                  System.out.print("Do you have more precincts? y/n: ");

                  response = scan.next();

                  System.out.println();

            }

            // Print out the results

            System.out.println("Total votes for Polly: " + totalPolly);

            System.out.println("Total votes for Ernest: " + totalErnest);

            // finding the percentage of votes for each candidate

            percentPolly = (double) totalPolly / (totalErnest + totalPolly);

            percentPolly *= 100;

            percentErnest = (double) totalErnest / (totalErnest + totalPolly);

            percentErnest *= 100;

            // displaying percentages with 2 digits precision followed by a %

            // character

            System.out.printf("Percentage of votes for Polly: %.2f%%\n",

                        percentPolly);

            System.out.printf("Percentage of votes for Ernest: %.2f%%\n",

                        percentErnest);

            System.out.println("Precincts won by Polly: " + precinctsPolly);

            System.out.println("Precincts won by Ernest: " + precinctsErnest);

            System.out.println("Precincts where votes tied: " + precinctsTie);

            System.out.println("Maximum win margin in a precinct: " + maxWinMargin);

      }

}

/*OUTPUT*/

Election Day Vote Counting Program

Enter votes for Polly: 1230

Enter votes for Ernest: 1340

Do you have more precincts? y/n: y

Enter votes for Polly: 2300

Enter votes for Ernest: 1799

Do you have more precincts? y/n: y

Enter votes for Polly: 1515

Enter votes for Ernest: 1515

Do you have more precincts? y/n: y

Enter votes for Polly: 3900

Enter votes for Ernest: 4210

Do you have more precincts? y/n: y

Enter votes for Polly: 7000

Enter votes for Ernest: 6788

Do you have more precincts? y/n: n

Total votes for Polly: 15945

Total votes for Ernest: 15652

Percentage of votes for Polly: 50.46%

Percentage of votes for Ernest: 49.54%

Precincts won by Polly: 2

Precincts won by Ernest: 2

Precincts where votes tied: 1

Maximum win margin in a precinct: 501