Util.java Source code

Introduction

Here is the source code for Util.java

Source

/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
   This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
   http://www.cs.umass.edu/~mccallum/mallet
   This software is provided under the terms of the Common Public License,
   version 1.0, as published by http://www.opensource.org.  For further
   information, see the file `LICENSE' included with this distribution. */

//package cc.mallet.util;

import java.lang.reflect.Array;

/**
 *  Static utility methods for arrays 
 *   (like java.util.Arrays, but more useful).
 *
 * @author <a href="mailto:casutton@cs.umass.edu">Charles Sutton</a>
 * @version $Id: ArrayUtils.java,v 1.1 2007/10/22 21:37:40 mccallum Exp $
 */
public class Util {
    /**
     * Returns a new array containing all of a, with additional extra space added (zero initialized).
     * @param a
     * @param additional
     * @return
     */
    public static int[] extend(int[] a, int additional) {
        int[] ret = new int[a.length + additional];
        System.arraycopy(a, 0, ret, 0, a.length);
        return ret;
    }

    /**
     * Returns a new array containing all of a, with additional extra space added (zero initialized).
     * @param a
     * @param additional
     * @return
     */
    public static double[] extend(double[] a, int additional) {
        double[] ret = new double[a.length + additional];
        System.arraycopy(a, 0, ret, 0, a.length);
        return ret;
    }

}