Java Reference
In-Depth Information
Display 13.6
Sorting Arrays of
Comparable
(part 1 of 2)
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/**
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Demonstrates sorting arrays for classes that
3
implement the Comparable interface.
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*/
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public class
ComparableDemo
6{
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The classes
Double
and
String
do
implement the
Comparable
interface.
public static void
main(String[] args)
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{
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Double[] d =
new
Double[10];
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for
(int i = 0; i < d.length; i++)
d[i] =
new
Double(d.length
−
i);
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System.out.println("Before sorting:");
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int
i;
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for
(i = 0; i < d.length; i++)
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System.out.print(d[i].doubleValue() + ", ");
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System.out.println();
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GeneralizedSelectionSort.sort(d, d.length);
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System.out.println("After sorting:");
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for
(i = 0; i < d.length; i++)
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System.out.print(d[i].doubleValue() + ", ");
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System.out.println();
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String[] a =
new
String[10];
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a[0] = "dog";
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a[1] = "cat";
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a[2] = "cornish game hen";
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int
numberUsed = 3;
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System.out.println("Before sorting:");
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for
(i = 0; i < numberUsed; i++)
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System.out.print(a[i] + ", ");
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System.out.println();
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GeneralizedSelectionSort.sort(a, numberUsed);
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System.out.println("After sorting:");
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for
(i = 0; i < numberUsed; i++)
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System.out.print(a[i] + ", ");
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System.out.println();
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}
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}
(continued)
