34 lines
1.1 KiB
Java
34 lines
1.1 KiB
Java
// arrays/Reverse.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// The Collections.reverseOrder() Comparator
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import java.util.*;
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import onjava.*;
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public class Reverse {
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public static void main(String[] args) {
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CompType[] a = Generated.array(
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new CompType[12], CompType.generator());
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System.out.println("before sorting:");
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System.out.println(Arrays.toString(a));
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Arrays.sort(a, Collections.reverseOrder());
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System.out.println("after sorting:");
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System.out.println(Arrays.toString(a));
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}
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}
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/* Output:
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before sorting:
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[[i = 58, j = 55], [i = 93, j = 61], [i = 61, j = 29]
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, [i = 68, j = 0], [i = 22, j = 7], [i = 88, j = 28]
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, [i = 51, j = 89], [i = 9, j = 78], [i = 98, j = 61]
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, [i = 20, j = 58], [i = 16, j = 40], [i = 11, j = 22]
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]
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after sorting:
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[[i = 98, j = 61], [i = 93, j = 61], [i = 88, j = 28]
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, [i = 68, j = 0], [i = 61, j = 29], [i = 58, j = 55]
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, [i = 51, j = 89], [i = 22, j = 7], [i = 20, j = 58]
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, [i = 16, j = 40], [i = 11, j = 22], [i = 9, j = 78]
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]
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*/
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