27 lines
776 B
Java
27 lines
776 B
Java
// arrays/ParallelSort.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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import java.util.*;
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import java.time.*;
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import onjava.*;
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import static onjava.TimeIt.*;
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public class ParallelSort {
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static final int SZ = 10_000_000;
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public static void main(String[] args) {
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int[] ia1 = new Rand.int_().array(SZ);
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int[] ia2 = Arrays.copyOf(ia1, ia1.length);
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System.out.print("sort(): ");
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long millis1 = timeIt(() -> Arrays.sort(ia1));
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System.out.print("parallelSort(): ");
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long millis2 = timeIt(() -> Arrays.parallelSort(ia2));
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System.out.println(millis1/millis2);
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}
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}
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/* Output:
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sort(): 484
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parallelSort(): 149
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3
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*/
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