Example usage for java.util Arrays stream

Introduction

In this page you can find the example usage for java.util Arrays stream.

Prototype

public static DoubleStream stream(double[] array)

Source Link

Document

Returns a sequential DoubleStream with the specified array as its source.

Usage

From source file:examples.utils.CifarReader.java

public static List<double[]> rawDouble(InputStream is) {
    List<double[]> result = new ArrayList<>();
    int row = 1 + (IMAGE_WIDTH * IMAGE_HIGHT * IMAGE_DEPTH);
    try {//from  w w w  .  j  ava  2s. c  o m
        while (is.available() > 0) {
            byte[] arr = new byte[row];
            is.read(arr);
            result.add(
                    Arrays.stream(ArrayUtils.toObject(arr)).mapToDouble(b -> Byte.toUnsignedInt(b)).toArray());
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
    return result;
}

From source file:Imputers.KnniLDProb.java

public double[][][] impute(double[][][] callprobs, int[][][] readCounts) {
    ProbToCallMinDepth p2c = new ProbToCallMinDepth(knownDepth);

    byte[][] original = p2c.call(callprobs, readCounts);

    Correlation corr = new Pearson();

    byte[][] transposed = Matrix.transpose(original);

    //Map<Integer,List<Integer>> ld = corr.topn(transposed, 100);
    Map<Integer, int[]> ld = corr.topn(transposed, 100);

    //Integer[][] sim = new Integer[original[0].length][];
    int[][] sim = new int[original[0].length][];
    //for (Entry<Integer,List<Integer>> e: ld.entrySet())
    for (Entry<Integer, int[]> e : ld.entrySet()) {
        //Integer[] a = new Integer[e.getValue().size()];
        //sim[e.getKey()] = e.getValue().toArray(a);
        sim[e.getKey()] = e.getValue();/*from ww  w  .j  av a 2s.co  m*/
    }

    double[][][] probs = new double[original.length][][];

    Progress progress = ProgressFactory.get(original.length);

    IntStream.range(0, original.length).parallel().forEach(i -> {
        double[][] p = new double[original[i].length][];
        probs[i] = p;
        IntStream.range(0, original[i].length).forEach(j -> {
            if (Arrays.stream(readCounts[i][j]).sum() < knownDepth) {
                p[j] = imputeSingle(original, i, j, false, sim);
            } else {
                p[j] = callprobs[i][j];
            }
        });
        progress.done();
    });

    return probs;
}

From source file:com.ejisto.util.collector.FieldNode.java

public FieldNode fillGap(MockedField mockedField) {
    String[] missingPath = difference(path, mockedField.getComparisonKey()).split(MockedField.PATH_SEPARATOR);
    List<String> difference = asList(missingPath);

    final List<FieldNode> gap = Arrays.stream(missingPath).limit(Math.max(0, missingPath.length - 1))
            .filter(StringUtils::isNotBlank).map(p -> {
                int index = difference.indexOf(p);
                return difference.stream().limit(index + 1).collect(joining(MockedField.PATH_SEPARATOR));
            }).map(p -> new FieldNode(mockedField, p)).collect(Collectors.toList());
    gap.add(0, this);
    return gap.stream().reduce((f1, f2) -> {
        f1.addChild(f2);/*from w w  w . java 2 s .  c om*/
        return f2;
    }).orElseThrow(IllegalStateException::new);
}

From source file:uk.urchinly.wabi.expose.DownloadController.java

@RequestMapping(method = RequestMethod.GET, value = "/browse")
public List<String> browseFiles(Model model) {

    File rootFolder = new File(appSharePath);

    return Arrays.stream(rootFolder.listFiles()).map(f -> f.getName()).collect(Collectors.toList());
}

From source file:com.ejisto.modules.vertx.handler.Boilerplate.java

static void addResourcesMatcher(RouteMatcher m) {
    Arrays.stream(ResourceType.values()).forEach(t -> m.getWithRegEx(t.regex,
            req -> serveResource(req.response(), extractResourceFileName(req, t), t.contentType)));
}

From source file:com.thinkbiganalytics.metadata.sla.EmailServiceLevelAgreementAction.java

@Override
public boolean respond(EmailServiceLevelAgreementActionConfiguration actionConfiguration,
        ServiceLevelAssessment assessment, Alert a) {
    log.info("Responding to SLA violation {}. for alert {} received from: {} ",
            assessment.getServiceLevelAgreementDescription().getName(), a.getId(), a.getSource());
    String desc = ServiceLevelAssessmentAlertUtil.getDescription(assessment);
    String slaName = assessment.getAgreement().getName();
    String emails = actionConfiguration.getEmailAddresses();
    String[] addresses = emails.split(",");
    String subject = "SLA Violated: " + slaName;
    String body = desc;/*from  w w  w  . java 2 s  . co  m*/

    VelocityEmailTemplate emailTemplate = parseVelocityTemplate(actionConfiguration, assessment, a);
    if (emailTemplate == null) {
        body = desc;
    } else {
        subject = emailTemplate.getSubject();
        body = emailTemplate.getBody();
    }
    final String finalSubject = subject;
    final String finalBody = body;
    log.info("sending {}  email to: {}", assessment.getServiceLevelAgreementDescription().getName(), addresses);
    Arrays.stream(addresses).forEach(address -> {
        emailService.sendMail(address.trim(), finalSubject, finalBody);
    });

    return true;
}

From source file:eu.crydee.alignment.aligner.ae.MetricsOneVsOneC.java

@Override
public void initialize(UimaContext context) throws ResourceInitializationException {
    super.initialize(context);
    results = HashBasedTable.create();/*from ww  w.j  a v a 2 s . co  m*/
    keys = Lists.newArrayList(keysArray);
    methodsMetadata = Arrays.stream(Complete.class.getMethods())
            .map(m -> Pair.of(m, m.getAnnotation(Metric.class)))
            .filter(p -> p.getRight() != null && keys.contains(p.getRight().key()))
            .collect(Collectors.toMap(p -> p.getRight().key(), p -> Pair.of(p.getLeft(), p.getRight().name())));
}

From source file:com.github.mavogel.ilias.utils.IOUtils.java

/**
 * Splits with ',' and trims each token.
 *
 * @param line the line to split//  w w  w .  j  a  v a 2s  .  co m
 * @return the tokens
 */
private static List<String> splitAndTrim(final String line) {
    return Arrays.stream(line.split(",")).map(StringUtils::deleteWhitespace).collect(Collectors.toList());
}

From source file:io.spring.initializr.metadata.InitializrConfiguration.java

private static String unsplitWords(String text) {
    return String.join("",
            Arrays.stream(text.split("(_|-| |:)+")).map(StringUtils::capitalize).toArray(String[]::new));
}

From source file:com.vsthost.rnd.jdeoptim.utils.Utils.java

/**
 * Returns random elements from the set.
 *
 * @param set The set to be chosen from.
 * @param n The number of elements to be returned.
 * @param exclude Elements to be excluded.
 * @param randomGenerator The random number generator.
 * @return Random elements./*from  w w w.  j  a v a 2 s  . co m*/
 */
public static int[] pickRandom(int[] set, int n, int[] exclude, RandomGenerator randomGenerator) {
    // Create a set from excluded:
    final Set<Integer> toExclude = new HashSet<>();
    Arrays.stream(exclude).forEach(toExclude::add);

    // Create set out of elements:
    int[] newSet = Arrays.stream(set).filter(e -> !toExclude.contains(e)).toArray();

    // Shuffle the set:
    MathArrays.shuffle(newSet, randomGenerator);

    // Get n elements and return:
    return Arrays.copyOf(newSet, n);
}