// A program to read in the number of votes each of two candidates received
//   in a number of precincts, then compute the winner of the election.
//
// This version of the program demonstrates good information flow by making
//   proper use of parameters and return values. Notice how main is a concise
//   summary of the program and major methods return their results to main.
//
// Notice also the factoring of common code out of the branches of the if/else
//   statement in printResults.
import java.util.*;

public class ElectionBuggy {
   public static final int NUM_VOTERS = 1013;

   public static void main(String[] args) {
      Scanner console = new Scanner(System.in);
   
      intro();
      int votes1 = 0;
      int votes2 = 0;
      getVotes("Pizza Party");
      getVotes("Pajama Party");
      printResults(votes1, votes2);
      reportTurnout(votes1 + votes2);
   }
   
   // Prints out an introduction to the program.
   public static void intro() {
      System.out.println("This program reads in data for two candidates");
      System.out.println("and computes the result of an election");
      System.out.println();   
   }
   
   // Reads in user input and returns the total votes for one candidate.
   //
   // Scanner console - the Scanner to use for input
   // String party - the name of the party   
   public static int getVotes(String party) {
      System.out.println("Enter " + party + " candidate's totals:");
      System.out.print("How many precincts? ");
      int numPrecincts = console.nextInt();

      int totalVotes = 0;
      for (int i = 0; i <= numPrecincts; i++) {    
         System.out.print("   Votes in next precinct? ");
         int votes = console.nextInt();
         totalVotes += votes;
      }
      System.out.println();
      
      return totalVotes;
   }
   
   // Computes and prints the final results of the election.
   //
   // int firstVotes - the number of votes the first candidate received
   // int secondVotes - the number of votes the second candidate received   
   public static void printResults(int firstVotes, int secondVotes) {
      int totalVotes = firstVotes + secondVotes;
      double pct1 = getPercentage(firstVotes, totalvotes);
      double pct2 = getPercentage(secondVotes, totalvotes);
      
      System.out.println("Pizza Party received " + round2(pct1) + "% of the votes cast");
      System.out.println("Pajama Party received " + round2(pct2) + "% of the votes cast");
      
      if (pct1 < pct2) {
         System.out.println("Pizza Party wins!");
      } else if (pct2 < pct1) {
         System.out.println("Pajama Party wins!");
      } else {    // pct2 == pct1
         System.out.println("It's a tie!");
      }
   }
   
   // Compute and print the precentage of eligible voters 
   //   who cast a vote.
   //
   // int totalVotes - the total number of votes cast
   public static void reportTurnout(int totalVotes) {
      double turnoutPct = getPercentage(totalVotes, NUM_VOTERS);
      System.out.println("Turnout was " + round2(turnoutPct) + "%");
   }

   // Computes and returns the percentage of votes earned.
   //
   // int myVotes - number of votes earned
   // int totalVotes - total votes cast
   public static double getPercentage(int myVotes, int totalVotes) {
      return 100 * myVotes / totalVotes;
   }
   
   // Returns the given number rounded to two decimal places.
   //
   // double num - the number to round
   public static double round2(double num) {
      return Math.round(num * 100.0) / 100.0;
   }
}