Java Reference
In-Depth Information
Display 14.3
Golf Score Program
(part 2 of 2)
42
int
numberOfScores = a.size();
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if
(numberOfScores > 0)
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{
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return
(total/numberOfScores);
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}
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else
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{
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System.out.println("ERROR: Trying to average 0 numbers.");
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System.out.println("computeAverage returns 0.");
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return
0;
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}
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}
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/**
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Gives screen output showing how much each of the elements
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in a differ from their average.
57
*/
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public static void
showDifference(ArrayList<
Double
> a)
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{
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double
average = computeAverage(a);
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System.out.println("Average of the " + a.size()
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+ " scores = " + average);
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System.out.println("The scores are:");
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for
(Double element : a)
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System.out.println(element + " differs from average by "
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+ (element
−
average));
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}
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}
Sample Dialogue
This program reads golf scores and shows
how much each differs from the average.
Enter golf scores:
Enter a list of nonnegative numbers.
Mark the end of the list with a negative number.
69 74 68 -1
Average of the 3 scores = 70.3333
The scores are:
69.0 differs from average by
−
1.33333
74.0 differs from average by 3.66667
68.0 differs from average by
−
2.33333
