Examples of org.apache.mahout.math.list.IntArrayList

org.apache.mahout.math.list.IntArrayList
Resizable list holding int elements; implemented with arrays.

   * #forEachKey(IntProcedure)}. <p> This method can be used to iterate over the keys of the receiver.
   *
   * @return the keys.
   */
  public IntArrayList keys() {
    IntArrayList list = new IntArrayList(size());
    keys(list);
    return list;
  }

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  /**
   * Returns a string representation of the receiver, containing the String representation of each key-value pair,
   * sorted ascending by key.
   */
  public String toString() {
    IntArrayList theKeys = keys();
    //theKeys.sort();


    StringBuilder buf = new StringBuilder();
    buf.append('[');
    int maxIndex = theKeys.size() - 1;
    for (int i = 0; i <= maxIndex; i++) {
      int key = theKeys.get(i);
      buf.append(String.valueOf(key));
      buf.append("->");
      buf.append(String.valueOf(get(key)));
      if (i < maxIndex) {
        buf.append(", ");

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  /**
   * Returns a string representation of the receiver, containing the String representation of each key-value pair,
   * sorted ascending by value.
   */
  public String toStringByValue() {
    IntArrayList theKeys = new IntArrayList();
    keysSortedByValue(theKeys);


    StringBuilder buf = new StringBuilder();
    buf.append('[');
    int maxIndex = theKeys.size() - 1;
    for (int i = 0; i <= maxIndex; i++) {
      int key = theKeys.get(i);
      buf.append(String.valueOf(key));
      buf.append("->");
      buf.append(String.valueOf(get(key)));
      if (i < maxIndex) {
        buf.append(", ");

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   * (8,6,7)</tt>
   *
   * @param keyList the list to be filled, can have any size.
   */
  public void keysSortedByValue(List<T> keyList) {
    pairsSortedByValue(keyList, new IntArrayList(size()));
  }

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   * #forEachKey(ObjectProcedure)}. <p> This method can be used to iterate over the values of the receiver.
   *
   * @return the values.
   */
  public IntArrayList values() {
    IntArrayList list = new IntArrayList(size());
    values(list);
    return list;
  }

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   * (8,6,7)</tt>
   *
   * @param keyList the list to be filled, can have any size.
   */
  public void keysSortedByValue(ByteArrayList keyList) {
    pairsSortedByValue(keyList, new IntArrayList(size()));
  }

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   * #forEachKey(ByteProcedure)}. <p> This method can be used to iterate over the values of the receiver.
   *
   * @return the values.
   */
  public IntArrayList values() {
    IntArrayList list = new IntArrayList(size());
    values(list);
    return list;
  }

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   * Fetch the list of entries from the tuple
   * 
   * @return a List containing the strings in the order of insertion
   */
  public IntArrayList getEntries() {
    return new IntArrayList(this.tuple.elements());
  }

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  }
  
  @Override
  public void readFields(DataInput in) throws IOException {
    int len = in.readInt();
    tuple = new IntArrayList(len);
    IntWritable value = new IntWritable();
    for (int i = 0; i < len; i++) {
      value.readFields(in);
      tuple.add(value.get());
    }

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    }
    
    Map<String,Long> gList = PFPGrowth.deserializeMap(params, PFPGrowth.G_LIST, context.getConfiguration());
    
    for (Entry<String,Long> entry : gList.entrySet()) {
      IntArrayList groupList = groupFeatures.get(entry.getValue());
      Integer itemInteger = fMap.get(entry.getKey());
      if (groupList != null) {
        groupList.add(itemInteger);
      } else {
        groupList = new IntArrayList();
        groupList.add(itemInteger);
        groupFeatures.put(entry.getValue(), groupList);
      }
      
    }
    maxHeapSize = Integer.valueOf(params.get(PFPGrowth.MAX_HEAPSIZE, "50"));

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