Arrays - Absolute Java - page 413

public static double [] differenceArray(
double [] argumentArray, int numberUsed, double adjustment)
{
double [] temp = new double [numberUsed];
for ( int i = 0; i < numberUsed; i++)
temp[i] = argumentArray[i] - adjustment;
return temp;
}
14. The only changes are to add the method differenceArray and to rewrite the
method showDifference as follows (the complete class definition is in the file
GolfScoresExercise.java on the accompanying website): extra code

on website

public static void showDifference( double [] a,

int numberUsed)

{
double average = computeAverage(a, numberUsed);
System.out.println("Average of the " + numberUsed

+ " scores = " + average);

double [] difference =
differenceArray(a, numberUsed, average);
System.out.println("The scores are:");
for ( int index = 0; index < numberUsed; index++)
System.out.println(a[index] +
" differs from average by "
+ difference[index]);
}
15. The main differences are to remove parameters, replace the array name a by
score , and make the method fillArray a void method. This code is in the file
GolfScoresStaticExercise.java on the accompanying website.

extra code
on website

import java.util.Scanner;

public class GolfScoresStaticExercise
{
public static final int MAX_NUMBER_SCORES = 10;
private static double [] score =
new double [MAX_NUMBER_SCORES];
private static int numberUsed = 0;

/**
Shows differences between each of a list of golf scores
and their average.
*/
public static void main(String[] args)
{