Java Code Examples for java.util.Arrays#parallelPrefix()

The following examples show how to use java.util.Arrays#parallelPrefix() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ParallelPrefix.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="longSet")
public void testParallelPrefixForLong(long[] data, int fromIndex, int toIndex, LongBinaryOperator op) {
    long[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsLong(sequentialResult[index  - 1], sequentialResult[index]);
    }

    long[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    long[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 2
Source File: ParallelPrefix.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="doubleSet")
public void testParallelPrefixForDouble(double[] data, int fromIndex, int toIndex, DoubleBinaryOperator op) {
    double[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsDouble(sequentialResult[index  - 1], sequentialResult[index]);
    }

    double[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    double[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 3
Source File: ParallelPrefix.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="intSet")
public void testParallelPrefixForInt(int[] data, int fromIndex, int toIndex, IntBinaryOperator op) {
    int[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsInt(sequentialResult[index  - 1], sequentialResult[index]);
    }

    int[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    int[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 4
Source File: ArrayExamples.java    From https-github.com-RichardWarburton-java-8-Lambdas-exercises with MIT License 5 votes vote down vote up 
public static double[] simpleMovingAverage(double[] values, int n) {
    double[] sums = Arrays.copyOf(values, values.length); // <1>
    Arrays.parallelPrefix(sums, Double::sum); // <2>
    int start = n - 1;
    return IntStream.range(start, sums.length) // <3>
                    .mapToDouble(i -> {
                        double prefix = i == start ? 0 : sums[i - n];
                        return (sums[i] - prefix) / n; // <4>
                    })
                    .toArray(); // <5>
}
Example 5
Source File: ParallelPrefix.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="stringSet")
public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) {
    String[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.apply(sequentialResult[index  - 1], sequentialResult[index]);
    }

    String[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertArraysEqual(parallelResult, sequentialResult);

    String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertArraysEqual(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 6
Source File: ParallelPrefix.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="doubleSet")
public void testParallelPrefixForDouble(double[] data, int fromIndex, int toIndex, DoubleBinaryOperator op) {
    double[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsDouble(sequentialResult[index  - 1], sequentialResult[index]);
    }

    double[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    double[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 7
Source File: ParallelPrefix.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="stringSet")
public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) {
    String[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.apply(sequentialResult[index  - 1], sequentialResult[index]);
    }

    String[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 8
Source File: ParallelPrefix.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="doubleSet")
public void testParallelPrefixForDouble(double[] data, int fromIndex, int toIndex, DoubleBinaryOperator op) {
    double[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsDouble(sequentialResult[index  - 1], sequentialResult[index]);
    }

    double[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    double[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 9
Source File: ParallelPrefix.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="intSet")
public void testParallelPrefixForInt(int[] data, int fromIndex, int toIndex, IntBinaryOperator op) {
    int[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsInt(sequentialResult[index  - 1], sequentialResult[index]);
    }

    int[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    int[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 10
Source File: ParallelPrefix.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="stringSet")
public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) {
    String[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.apply(sequentialResult[index  - 1], sequentialResult[index]);
    }

    String[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 11
Source File: ArrayExamples.java    From java-8-lambdas-exercises with MIT License 5 votes vote down vote up 
public static double[] simpleMovingAverage(double[] values, int n) {
    double[] sums = Arrays.copyOf(values, values.length); // <1>
    Arrays.parallelPrefix(sums, Double::sum); // <2>
    int start = n - 1;
    return IntStream.range(start, sums.length) // <3>
                    .mapToDouble(i -> {
                        double prefix = i == start ? 0 : sums[i - n];
                        return (sums[i] - prefix) / n; // <4>
                    })
                    .toArray(); // <5>
}
Example 12
Source File: ParallelPrefix.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="intSet")
public void testParallelPrefixForInt(int[] data, int fromIndex, int toIndex, IntBinaryOperator op) {
    int[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsInt(sequentialResult[index  - 1], sequentialResult[index]);
    }

    int[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    int[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 13
Source File: ParallelPrefix.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="stringSet")
public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) {
    String[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.apply(sequentialResult[index  - 1], sequentialResult[index]);
    }

    String[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 14
Source File: ParallelPrefix.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="doubleSet")
public void testParallelPrefixForDouble(double[] data, int fromIndex, int toIndex, DoubleBinaryOperator op) {
    double[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsDouble(sequentialResult[index  - 1], sequentialResult[index]);
    }

    double[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    double[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 15
Source File: ParallelPrefix.java    From jdk8u_jdk with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="stringSet")
public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) {
    String[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.apply(sequentialResult[index  - 1], sequentialResult[index]);
    }

    String[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 16
Source File: ParallelPrefix.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="intSet")
public void testParallelPrefixForInt(int[] data, int fromIndex, int toIndex, IntBinaryOperator op) {
    int[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsInt(sequentialResult[index  - 1], sequentialResult[index]);
    }

    int[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    int[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 17
Source File: ParallelPrefix.java    From dragonwell8_jdk with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="stringSet")
public void testParallelPrefixForStringr(String[] data , int fromIndex, int toIndex, BinaryOperator<String> op) {
    String[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.apply(sequentialResult[index  - 1], sequentialResult[index]);
    }

    String[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    String[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 18
Source File: ParallelPrefix.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="longSet")
public void testParallelPrefixForLong(long[] data, int fromIndex, int toIndex, LongBinaryOperator op) {
    long[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsLong(sequentialResult[index  - 1], sequentialResult[index]);
    }

    long[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    long[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 19
Source File: ParallelPrefix.java    From dragonwell8_jdk with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="longSet")
public void testParallelPrefixForLong(long[] data, int fromIndex, int toIndex, LongBinaryOperator op) {
    long[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsLong(sequentialResult[index  - 1], sequentialResult[index]);
    }

    long[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    long[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}
Example 20
Source File: ParallelPrefix.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
@Test(dataProvider="doubleSet")
public void testParallelPrefixForDouble(double[] data, int fromIndex, int toIndex, DoubleBinaryOperator op) {
    double[] sequentialResult = data.clone();
    for (int index = fromIndex + 1; index < toIndex; index++) {
        sequentialResult[index ] = op.applyAsDouble(sequentialResult[index  - 1], sequentialResult[index]);
    }

    double[] parallelResult = data.clone();
    Arrays.parallelPrefix(parallelResult, fromIndex, toIndex, op);
    assertEquals(parallelResult, sequentialResult);

    double[] parallelRangeResult = Arrays.copyOfRange(data, fromIndex, toIndex);
    Arrays.parallelPrefix(parallelRangeResult, op);
    assertEquals(parallelRangeResult, Arrays.copyOfRange(sequentialResult, fromIndex, toIndex));
}