30 lines
1023 B
Java
30 lines
1023 B
Java
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import java.util.*;
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public class ParallelSort
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{
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public static void main(String[] args)
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{
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// Create a list and populate it with random numbers
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List<Integer> list = new ArrayList();
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Random r = new Random();
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for (int x = 0; x < 30000000; x++)
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{
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list.add(r.nextInt(10000));
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}
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// Create two arrays for sorting.
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Integer[] array1 = new Integer[list.size()];
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Integer[] array2 = new Integer[list.size()];
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array1 = list.toArray(array1);
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array2 = list.toArray(array2);
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// sort array
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long start = System.currentTimeMillis();
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Arrays.sort(array1);
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long end = System.currentTimeMillis();
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System.out.println("Sort Time: " + (end - start));
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// sort array using parallel sort
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start = System.currentTimeMillis();
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Arrays.parallelSort(array2);
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end = System.currentTimeMillis();
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System.out.println("Parallel Sort Time: " + (end - start));
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}
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