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/** 
 * Programming Assignment #1  (MEANS)
 * Anthony Yates
 * For CSCE 1040 (Spring 2008)
 */
// import java.util.*;  // for String tokenizer.
// import java.io.*;    // File I/O package

class Means {  
    /* This class defines data and methods for computing means, using the 
     * arithmetic mean and the geometric mean.
     */

   private float meanSum;
   private float meanProduct;
   private int meanItems;

   public Means() {
      meanSum = 0;
      meanProduct = 1;
      meanItems = 0;
    } // end Means()

    public float getMeanSum() {
       return (meanSum);
    } // end getMeanSum()

    public float getMeanProduct() {
       return (meanProduct);
    } // end getMeanProduct()

    public int getMeanItems() {
       return (meanItems);
    } // end getMeanItems()

    public float getArithmeticMean(){
       return( meanSum / meanItems );
    } // end getArithmeticMean()

    public float getGeometricMean(){
       return (float)( Math.pow( meanProduct,
           ( 1.0 / meanItems ) ) );
    } // end getGeometricMean()

    public void addMeanItem(float x){
       meanSum += x;
       meanProduct *= x;
       ++meanItems;
    } // end addMeanItem()

} // end class Means()

	
public class yatesProg1 {
   static Means MyMeans = new Means();
   final static int NumberForComputation = 10;
   static int traceLevel = 0;
   static int NumComp = NumberForComputation;

   public static void main(String[] args)
   {
      if (args.length >= 1) {
         NumComp = Integer.parseInt(args[0]);
	 if (args.length == 2) {
            traceLevel = Integer.parseInt(args[1]);
         }
      }

      if (traceLevel > 0) {
         System.out.println("\nNumber of Items is " + MyMeans.getMeanItems());
         System.out.println("The meanSum is " + MyMeans.getMeanSum());
         System.out.println("The meanProduct is " + MyMeans.getMeanProduct()
             + "\n");
         }

      // Compute means for the first NumComp integers
      for (int i = 1; i <= NumComp; i++) {
         MyMeans.addMeanItem(i);

         if (traceLevel > 0) {
            System.out.println("AM = " + MyMeans.getArithmeticMean() + ", GM = "
                + MyMeans.getGeometricMean());
         }
         if (MyMeans.getGeometricMean() > MyMeans.getArithmeticMean()) {
            System.out.println("The Geometric Mean is greater than the " +
                "Arithmetic Mean.");
         }
      }
      System.out.println("Means of the first " + MyMeans.getMeanItems()
          + " integers" );
      System.out.println("The Arithmetic Mean is " + MyMeans.getArithmeticMean()
          + ", and the Geometric Mean is " + MyMeans.getGeometricMean() + ".\n");


      // Compute means for first NumComp values of (26*i + 7) mod 31,
      //    for i=1,2, ...
      // Student to fill this in.
      // Copy and modify the loop and System.out statements above.
      MyMeans = new Means();
      for (int i = 1; i <= NumComp; i++) {
         MyMeans.addMeanItem(i);

         if (traceLevel > 0) {
            System.out.println("AM = " + MyMeans.getArithmeticMean() + ", GM = "
                + MyMeans.getGeometricMean());
         }
         if (MyMeans.getGeometricMean() > MyMeans.getArithmeticMean()) {
            System.out.println("The Geometric Mean is greater than the " +
                "Arithmetic Mean.");
         }
      }
      System.out.println("Means of the first " + MyMeans.getMeanItems()
          + " integers" );
      System.out.println("The Arithmetic Mean is " + MyMeans.getArithmeticMean()
          + ", and the Geometric Mean is " + MyMeans.getGeometricMean() + ".\n");


      // Compute means for NumComp random integers from 1 to 100
      // Student to fill this in.
      MyMeans = new Means();
      for (int i = 1; i <= NumComp; i++) {
         MyMeans.addMeanItem(i);

         if (traceLevel > 0) {
            System.out.println("AM = " + MyMeans.getArithmeticMean() + ", GM = "
                + MyMeans.getGeometricMean());
         }
         if (MyMeans.getGeometricMean() > MyMeans.getArithmeticMean()) {
            System.out.println("The Geometric Mean is greater than the " +
                "Arithmetic Mean.");
         }
      }
      System.out.println("Means of the first " + MyMeans.getMeanItems()
          + " integers" );
      System.out.println("The Arithmetic Mean is " + MyMeans.getArithmeticMean()
          + ", and the Geometric Mean is " + MyMeans.getGeometricMean() + ".\n");


      // Compute means for the first NumComp values of the sequence 2,
      //    1.5, 1.3333, 1.25, .... 1 1/k ...
      // Student to fill this in.
      MyMeans = new Means();
      for (int i = 1; i <= NumComp; i++) {
         MyMeans.addMeanItem(i);

         if (traceLevel > 0) {
            System.out.println("AM = " + MyMeans.getArithmeticMean() + ", GM = "
                + MyMeans.getGeometricMean());
         }
         if (MyMeans.getGeometricMean() > MyMeans.getArithmeticMean()) {
            System.out.println("The Geometric Mean is greater than the " +
                "Arithmetic Mean.");
         }
      }
      System.out.println("Means of the first " + MyMeans.getMeanItems()
          + " integers" );
      System.out.println("The Arithmetic Mean is " + MyMeans.getArithmeticMean()
          + ", and the Geometric Mean is " + MyMeans.getGeometricMean() + ".\n");

   } // end main()

} // end class yatesProg1