Thread: Election Java Problem

Hello Everyone.

I'm having difficulty solving this election problem.

Due 11/9/2009
The purpose of this project is to demonstrate knowledge of loops and counters.

You will present to the user a choice of at least 3 items to chose from. Choices can be repeatedly made until the user asks to exit. At the end the counts for each choice and the percentages will be displayed. A winner needs to be declared if there is a simple majority.

Feel free to use different candidates for a different election like SGA President, or Favorite Actor, or Favorite Video Game [ keep it clean please ].

Sample Run


1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 1

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 2

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 1

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 2

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 1

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 1

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 2

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 1

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 44

Ooops! Invalid Candidate!

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 0

Results:

Candidate Votes Percent
Corzine 5 31.3%
Christie 3 18.8%
Daggett 8 50.0%

Daggett declared winner
Press any key to continue . . .

Another Sample Run


1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 2

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 3

1 - Jon Corzine(D)
2 - Chris Christie(R)
3 - Chris Daggett(I)

Enter the voter's choice (1-3, 0 Exit): 0

Results:

Candidate Votes Percent
Corzine 0 0.0%
Christie 1 50.0%
Daggett 1 50.0%

No winner declared!
Press any key to continue . . .

Its not solved by using files and not a for loop.
Here are some examples I found in my textbook that relate to the problem.

import java.util.Scanner;
 
public class DemoDoWhile
{
	public static void main(String args[])
	{
		int customerChoice;
 
		Scanner input = new Scanner(System.in);
 
		do
		{
			// display menu
			System.out.println("\nIgloo Ice Cream Store");
			System.out.println("\nMenu Choices");
			System.out.println("\n1 - Sundae");
			System.out.println("2 - Shake");
			System.out.println("3 - Cone");
			System.out.println("\n0 - Exit\n");
 
			System.out.print("Enter the customer's choice: ");
			customerChoice = input.nextInt();
 
			switch (customerChoice)
			{
				case 0:
				  System.out.println("\nBye bye!\n");
				  break;
				case 1:
				  System.out.println("\nSundaes Use:");
				  System.out.println("\t8 oz. ice cream");
				  System.out.println("\t1 oz. chopped nuts");
				  System.out.println("\t2 oz. chocolate sauce");
				  System.out.println("\t1     cherry");
				  break;
				case 2:
				  System.out.println("\nShakes Use:");
				  System.out.println("\t10 oz. ice cream");
				  System.out.println("\t1 oz.  chocolate sauce");
				  break;
				case 3:
				  System.out.println("\nCones Use:");
				  System.out.println("\t6 oz. ice cream");
				  System.out.println("\t1     cone");
				  break;
				default:
				  System.out.println("\nyou entered an invalid choice");
			} // end switch
		} while (customerChoice != 0);
	} // end main method
} // end class
 
Example 2
 
import java.util.Random;
 
public class FlipCoinsLoop
{
	public static void main(String args[])
	{
		Random randomNumbers = new Random();
		int numHeads = 0;
		int numTails = 0;
		int numFlips;
 
		//simulate flipping a coin multiple times and tally what we have
 
		for (numFlips = 1; numFlips <= 10; numFlips++)
		{
 
 
			if (randomNumbers.nextBoolean())
			{
				System.out.println("Heads");
				numHeads++;
			}
			else
			{
				System.out.println("Tails");
				numTails++;
			}
		}
 
		System.out.printf("\nTally:\n");
		System.out.printf("%s %d\n","Heads",numHeads);
		System.out.printf("%s %d\n","Tails",numTails);
	}
}
 
ex. 3
 
public class IntDivisionCast
{
    public static void main(String[] args)
 
    {
		// declare variables
		int numberVotesBob, numberVotesPat, totalNumberVotes;
		double percentVotesBob, percentVotesPat;
 
		// get data
		numberVotesBob = 145;
		numberVotesPat = 197;
 
 
		// calc data
		totalNumberVotes = numberVotesBob + numberVotesPat;
 
		// integer division avoided by cast (double) "pretends" that
		// numberVotesBob is a double for calculation
 
		percentVotesBob = (double) numberVotesBob / totalNumberVotes * 100;
		percentVotesPat = (double) numberVotesPat / totalNumberVotes * 100;
 
		// display results
		System.out.printf("\n%-12s %6.2f%%\n", "% Votes Bob",percentVotesBob);
		System.out.printf("\n%-12s %6.2f%%\n", "% Votes Pat",percentVotesPat);
 
    }
}

If anyone can suggest direction or guidance for me, I would appreciate it. I was using files before to solve it and my professor said it was wrong.

Thanks for any help

ron