/*
 * File: ArrayDataSetTest.java
 * 
 * A simple test class for the ArrayDataSet class.  Stores any number of  
 * integer scores in an array, passes the array to the ArrayDataSet constructor,
 * and calls the methods of the ArrayDataSet class
 *
 * In this example the scores are generated randomly, but the ArrayDataSet
 * class would not have to be modified in any way if they were read from the 
 * keyboard or from a data file instead
 *
 * Also shows how to use a while loop to "coerce" good input
 */

import java.util.Random;
import javax.swing.JOptionPane;

public class ArrayDataSetTest
{
   public static void main(String[] args)
   {
      // get number of scores from the user
      String input = JOptionPane.showInputDialog("How many scores?");
      int numberOfScores = Integer.parseInt(input);
      
      // check for illegal number of scores
      while ( numberOfScores <= 0 )
      {
         JOptionPane.showMessageDialog(null, "Sorry, number of scores must be "
                 + "positive!\n(You entered " + numberOfScores + ")") ;
         input = JOptionPane.showInputDialog("How many scores?") ;
         numberOfScores = Integer.parseInt(input) ;
      }

      // declare array to hold that number of scores
      int[] theScores = new int[numberOfScores];

      Random r = new Random();

      // generate exactly "numberOfScores" random scores between 0 and 100,
      // inclusive and store them in the array
      for (int i = 0 ; i < numberOfScores; i++)
      {
         theScores[i] = r.nextInt(101);
      }

      ArrayDataSet set = new ArrayDataSet(theScores);

      System.out.println("The scores: " + set.toString()) ;
      System.out.println("The average is: " + 
                          String.format("%.2f", set.getAverage())) ;
      System.out.println("The maximum is: " + set.getMaximum()) ;
      System.out.println("The standard deviation is: " + 
                          String.format("%.2f", set.getStanDev())) ;
   }
}