Example usage for java.util ArrayList size

Introduction

In this page you can find the example usage for java.util ArrayList size.

Prototype

int size

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Document

The size of the ArrayList (the number of elements it contains).

Usage

From source file:Main.java

/**
 * Returns a List of Lists: all combinations of the elements of the given
 * List./* w  w  w  . j  a  v  a  2 s .  c om*/
 *
 * @param maxCombinationSize combinations larger than this value are
 * discarded
 * @param mandatoryItem an item that all returned combinations must contain,
 * or null to leave unspecified
 */
public static List combinations(List original, int maxCombinationSize, Object mandatoryItem) {
    ArrayList combinations = new ArrayList();

    //Combinations are given by the bits of each binary number from 1 to 2^N
    for (int i = 1; i <= ((int) Math.pow(2, original.size()) - 1); i++) {
        ArrayList combination = new ArrayList();
        for (int j = 0; j < original.size(); j++) {
            if ((i & (int) Math.pow(2, j)) > 0) {
                combination.add(original.get(j));
            }
        }
        if (combination.size() > maxCombinationSize) {
            continue;
        }
        if ((mandatoryItem != null) && !combination.contains(mandatoryItem)) {
            continue;
        }
        combinations.add(combination);
    }

    return combinations;
}

From source file:Main.java

/**
 * Get an array of specific attributes for specific elements
 * in a Node tree. If the node is a Document, use the document
 * element as the starting point./*from   w  w  w  .  j  ava2s  .  co  m*/
 * @param node the top of the tree to search.
 * @param nodeName the element names to include in the search.
 * @param attrName the name of the attributes to include.
 * @return the array of attribute values natching the criteria.
 */
public static String[] getAttributeValues(Node node, String nodeName, String attrName) {
    if (node instanceof Document)
        node = ((Document) node).getDocumentElement();
    if (!(node instanceof Element))
        return new String[0];
    NodeList nodeList = ((Element) node).getElementsByTagName(nodeName);
    ArrayList list = new ArrayList();
    for (int i = 0; i < nodeList.getLength(); i++) {
        Attr attr = ((Element) nodeList.item(i)).getAttributeNode(attrName);
        if (attr != null)
            list.add(attr.getValue());
    }
    String[] values = new String[list.size()];
    return (String[]) list.toArray(values);
}

From source file:SageCollegeProject.guideBox.java

public static void UpdateAllShowJsonFile() {
    System.out.println("Getting ready to read all guidebox data for shows.");
    ArrayList<guide_ShowObject> res = new ArrayList<>();
    ReadAllShowsFromWeb(res);/*from   w w  w  .  java2  s  .c  o m*/
    Gson gson = new GsonBuilder().create();
    String json = gson.toJson(res);
    System.out.println(res.size());
    WriteJsonToFile(json, AllShowsJsonFile);
    sagex.api.Configuration.SetServerProperty(guideboxUpdateProp,
            java.lang.String.valueOf(System.currentTimeMillis()));
}

From source file:Main.java

@SuppressWarnings("nls")
public static String[] getStringIdArray(String serializedTree) {
    ArrayList<String> ids = new ArrayList<String>();
    String[] values = serializedTree.split("[\\[\\],\"\\s]"); // Split on [ ] , or whitespace chars
    for (String idString : values) {
        if (!TextUtils.isEmpty(idString))
            ids.add(idString);// w w  w. ja va  2s. c om
    }
    return ids.toArray(new String[ids.size()]);
}

From source file:bb.mcmc.analysis.ConvergeStatUtils.java

public static <T> List<T> getSubList(ArrayList<T> list, int burnin) {
    List<T> subList = list.subList(burnin, list.size());
    return subList;
}

From source file:com.clust4j.algo.preprocess.impute.NearestNeighborImputation.java

private static double[] exclude(double[] vec, ArrayList<Integer> exclude) {
    final double[] comp = new double[vec.length - exclude.size()];
    final int n = vec.length;

    int j = 0;//from   w w w . j av a2  s  .c  om
    for (int i = 0; i < n; i++) {
        if (exclude.contains(i))
            continue;
        comp[j++] = vec[i];
    }

    return comp;
}

From source file:Main.java

/**
 * A helper method to get a String[] out of a fieldArray
 *
 * @param fields R.strings.class.getFields()
 * @return a String[] with the string ids we need
 *///from  w ww  .  ja  va 2  s  . c o  m
private static String[] getDefinedFonts(Context ctx, Field[] fields) {
    ArrayList<String> fieldArray = new ArrayList<String>();
    for (Field field : fields) {
        if (field.getName().contains("define_font_")) {
            fieldArray.add(getStringResourceByName(ctx, field.getName()));
        }
    }
    return fieldArray.toArray(new String[fieldArray.size()]);
}

From source file:Estadistica.java

/**
 * Metodo  multiple//from w ww .j  av a 2 s .  c  o  m
 * param  una lista de valores (xArrayList)
 * @return
 */
public static double multiple(ArrayList<Double> xArrayList) {
    double cal = 0;
    for (int i = 0; i < xArrayList.size(); i++) {
        cal += xArrayList.get(i);
    }
    return cal;
}

From source file:Utils.java

public static Element[] getElements(Document document, Element parent) {
    if (parent == null) {
        return new Element[] {};
    }/*from w w w .j a v  a  2  s . c  o m*/

    NodeList nl = parent.getChildNodes();
    ArrayList al = new ArrayList();

    for (int i = 0; i < nl.getLength(); i++) {
        Node n = nl.item(i);

        if (n instanceof Element) {
            al.add((Element) nl.item(i));
        }
    }

    Element[] ret = new Element[al.size()];
    Iterator it = al.iterator();
    int i = 0;
    while (it.hasNext()) {
        ret[i] = (Element) it.next();
        i++;
    }

    return ret;
}

From source file:Main.java

public static Element[] getElementsByName(Element parent, String name) {
    ArrayList resList = new ArrayList();
    NodeList nl = getNodeList(parent);
    for (int i = 0; i < nl.getLength(); i++) {
        Node nd = nl.item(i);//from   w  w w .j  av a  2s. c o m
        if (nd.getNodeName().equals(name)) {
            resList.add(nd);
        }
    }
    Element[] res = new Element[resList.size()];
    for (int i = 0; i < resList.size(); i++) {
        res[i] = (Element) resList.get(i);
    }
    logger.debug(parent.getNodeName() + "'s children of " + name + "'s num:" + res.length);
    return res;
}