br.com.topsys.util.TSArrayUtil.java Source code

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/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowledgement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgement may appear in the software itself,
 *    if and wherever such third-party acknowledgements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package br.com.topsys.util;

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;

/**
 * <p>
 * Operations on arrays, primitive arrays (like <code>int[]</code>) and
 * primitive wrapper arrays (like <code>Integer[]</code>).
 * </p>
 * 
 * <p>
 * This class tries to handle <code>null</code> input gracefully. An exception
 * will not be thrown for a <code>null</code> array input. However, an Object
 * array that contains a <code>null</code> element may throw an exception.
 * Each method documents its behaviour.
 * </p>
 * 
 * @author Stephen Colebourne
 * @author Moritz Petersen
 * @author <a href="mailto:fredrik@westermarck.com">Fredrik Westermarck </a>
 * @author Nikolay Metchev
 * @author Matthew Hawthorne
 * @author Tim O'Brien
 * @author Pete Gieser
 * @author Gary Gregory
 * @since 2.0
 * @version $Id: TSArrayUtil.java,v 1.1 2008/10/03 23:42:05 andre.topazio Exp $
 */
public class TSArrayUtil {

    /**
     * An empty immutable <code>Object</code> array.
     */
    public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];

    /**
     * An empty immutable <code>Class</code> array.
     */
    public static final Class[] EMPTY_CLASS_ARRAY = new Class[0];

    /**
     * An empty immutable <code>String</code> array.
     */
    public static final String[] EMPTY_STRING_ARRAY = new String[0];

    /**
     * An empty immutable <code>long</code> array.
     */
    public static final long[] EMPTY_LONG_ARRAY = new long[0];

    /**
     * An empty immutable <code>Long</code> array.
     */
    public static final Long[] EMPTY_LONG_OBJECT_ARRAY = new Long[0];

    /**
     * An empty immutable <code>int</code> array.
     */
    public static final int[] EMPTY_INT_ARRAY = new int[0];

    /**
     * An empty immutable <code>Integer</code> array.
     */
    public static final Integer[] EMPTY_INTEGER_OBJECT_ARRAY = new Integer[0];

    /**
     * An empty immutable <code>short</code> array.
     */
    public static final short[] EMPTY_SHORT_ARRAY = new short[0];

    /**
     * An empty immutable <code>Short</code> array.
     */
    public static final Short[] EMPTY_SHORT_OBJECT_ARRAY = new Short[0];

    /**
     * An empty immutable <code>byte</code> array.
     */
    public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];

    /**
     * An empty immutable <code>Byte</code> array.
     */
    public static final Byte[] EMPTY_BYTE_OBJECT_ARRAY = new Byte[0];

    /**
     * An empty immutable <code>double</code> array.
     */
    public static final double[] EMPTY_DOUBLE_ARRAY = new double[0];

    /**
     * An empty immutable <code>Double</code> array.
     */
    public static final Double[] EMPTY_DOUBLE_OBJECT_ARRAY = new Double[0];

    /**
     * An empty immutable <code>float</code> array.
     */
    public static final float[] EMPTY_FLOAT_ARRAY = new float[0];

    /**
     * An empty immutable <code>Float</code> array.
     */
    public static final Float[] EMPTY_FLOAT_OBJECT_ARRAY = new Float[0];

    /**
     * An empty immutable <code>boolean</code> array.
     */
    public static final boolean[] EMPTY_BOOLEAN_ARRAY = new boolean[0];

    /**
     * An empty immutable <code>Boolean</code> array.
     */
    public static final Boolean[] EMPTY_BOOLEAN_OBJECT_ARRAY = new Boolean[0];

    /**
     * An empty immutable <code>char</code> array.
     */
    public static final char[] EMPTY_CHAR_ARRAY = new char[0];

    /**
     * An empty immutable <code>Character</code> array.
     */
    public static final Character[] EMPTY_CHARACTER_OBJECT_ARRAY = new Character[0];

    /**
     * <p>
     * ArrayUtils instances should NOT be constructed in standard programming.
     * Instead, the class should be used as
     * <code>ArrayUtils.clone(new int[] {2})</code>.
     * </p>
     * 
     * <p>
     * This constructor is public to permit tools that require a JavaBean
     * instance to operate.
     * </p>
     */
    public TSArrayUtil() {
    }

    // Basic methods handling multi-dimensional arrays
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Outputs an array as a String, treating <code>null</code> as an empty
     * array.
     * </p>
     * 
     * <p>
     * Multi-dimensional arrays are handled correctly, including
     * multi-dimensional primitive arrays.
     * </p>
     * 
     * <p>
     * The format is that of Java source code, for example <code>{a,b}</code>.
     * </p>
     * 
     * @param array
     *            the array to get a toString for, may be <code>null</code>
     * @return a String representation of the array, '{}' if null array input
     */
    public static String toString(final Object array) {
        return toString(array, "{}");
    }

    /**
     * <p>
     * Outputs an array as a String handling <code>null</code>s.
     * </p>
     * 
     * <p>
     * Multi-dimensional arrays are handled correctly, including
     * multi-dimensional primitive arrays.
     * </p>
     * 
     * <p>
     * The format is that of Java source code, for example <code>{a,b}</code>.
     * </p>
     * 
     * @param array
     *            the array to get a toString for, may be <code>null</code>
     * @param stringIfNull
     *            the String to return if the array is <code>null</code>
     * @return a String representation of the array
     */
    public static String toString(final Object array, final String stringIfNull) {
        if (array == null) {
            return stringIfNull;
        }
        return new ToStringBuilder(array, ToStringStyle.SIMPLE_STYLE).append(array).toString();
    }

    /**
     * <p>
     * Get a hashCode for an array handling multi-dimensional arrays correctly.
     * </p>
     * 
     * <p>
     * Multi-dimensional primitive arrays are also handled correctly by this
     * method.
     * </p>
     * 
     * @param array
     *            the array to get a hashCode for, may be <code>null</code>
     * @return a hashCode for the array, zero if null array input
     */
    public static int hashCode(final Object array) {
        return new HashCodeBuilder().append(array).toHashCode();
    }

    /**
     * <p>
     * Compares two arrays, using equals(), handling multi-dimensional arrays
     * correctly.
     * </p>
     * 
     * <p>
     * Multi-dimensional primitive arrays are also handled correctly by this
     * method.
     * </p>
     * 
     * @param array1
     *            the array to get a hashCode for, may be <code>null</code>
     * @param array2
     *            the array to get a hashCode for, may be <code>null</code>
     * @return <code>true</code> if the arrays are equal
     */
    public static boolean isEquals(final Object array1, final Object array2) {
        return new EqualsBuilder().append(array1, array2).isEquals();
    }

    // To map
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Converts the given array into a {@link java.util.Map}. Each element of
     * the array must be either a {@link java.util.Map.Entry}or an Array,
     * containing at least two elements, where the first element is used as key
     * and the second as value.
     * </p>
     * 
     * <p>
     * This method can be used to initialize:
     * </p>
     * 
     * <pre>
     * 
     *  // Create a Map mapping colors.
     *  Map colorMap = MapUtils.toMap(new String[][] {{
     *      {&quot;RED&quot;, &quot;#FF0000&quot;},
     *      {&quot;GREEN&quot;, &quot;#00FF00&quot;},
     *      {&quot;BLUE&quot;, &quot;#0000FF&quot;}});
     *  
     * </pre>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            an array whose elements are either a
     *            {@link java.util.Map.Entry}or an Array containing at least
     *            two elements, may be <code>null</code>
     * @return a <code>Map</code> that was created from the array
     * @throws IllegalArgumentException
     *             if one element of this Array is itself an Array containing
     *             less then two elements
     * @throws IllegalArgumentException
     *             if the array contains elements other than
     *             {@link java.util.Map.Entry}and an Array
     */
    public static Map toMap(final Object[] array) {
        if (array == null) {
            return null;
        }
        final Map map = new HashMap((int) (array.length * 1.5));
        for (int i = 0; i < array.length; i++) {
            Object object = array[i];
            if (object instanceof Map.Entry) {
                Map.Entry entry = (Map.Entry) object;
                map.put(entry.getKey(), entry.getValue());
            } else if (object instanceof Object[]) {
                Object[] entry = (Object[]) object;
                if (entry.length < 2) {
                    throw new IllegalArgumentException(
                            "Array element " + i + ", '" + object + "', has a length less than 2");
                }
                map.put(entry[0], entry[1]);
            } else {
                throw new IllegalArgumentException(
                        "Array element " + i + ", '" + object + "', is neither of type Map.Entry nor an Array");
            }
        }
        return map;
    }

    // Clone
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Shallow clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * The objecs in the array are not cloned, thus there is no special handling
     * for multi-dimensional arrays.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to shallow clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static Object[] clone(final Object[] array) {
        if (array == null) {
            return null;
        }
        return (Object[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static long[] clone(final long[] array) {
        if (array == null) {
            return null;
        }
        return (long[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static int[] clone(int[] array) {
        if (array == null) {
            return null;
        }
        return (int[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static short[] clone(final short[] array) {
        if (array == null) {
            return null;
        }
        return (short[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static char[] clone(final char[] array) {
        if (array == null) {
            return null;
        }
        return (char[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static byte[] clone(final byte[] array) {
        if (array == null) {
            return null;
        }
        return (byte[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static double[] clone(final double[] array) {
        if (array == null) {
            return null;
        }
        return (double[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static float[] clone(final float[] array) {
        if (array == null) {
            return null;
        }
        return (float[]) array.clone();
    }

    /**
     * <p>
     * Clones an array returning a typecast result and handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            the array to clone, may be <code>null</code>
     * @return the cloned array, <code>null</code> if <code>null</code>
     *         input
     */
    public static boolean[] clone(final boolean[] array) {
        if (array == null) {
            return null;
        }
        return (boolean[]) array.clone();
    }

    // Is same length
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * 
     * <p>
     * Any multi-dimensional aspects of the arrays are ignored.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final Object[] array1, final Object[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final long[] array1, final long[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final int[] array1, final int[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final short[] array1, final short[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final char[] array1, final char[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final byte[] array1, final byte[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final double[] array1, final double[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final float[] array1, final float[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same length, treating <code>null</code>
     * arrays as length <code>0</code>.
     * </p>
     * 
     * @param array1
     *            the first array, may be <code>null</code>
     * @param array2
     *            the second array, may be <code>null</code>
     * @return <code>true</code> if length of arrays matches, treating
     *         <code>null</code> as an empty array
     */
    public static boolean isSameLength(final boolean[] array1, final boolean[] array2) {
        if ((array1 == null && array2 != null && array2.length > 0)
                || (array2 == null && array1 != null && array1.length > 0)
                || (array1 != null && array2 != null && array1.length != array2.length)) {
            return false;
        }
        return true;
    }

    /**
     * <p>
     * Checks whether two arrays are the same type taking into account
     * multi-dimensional arrays.
     * </p>
     * 
     * @param array1
     *            the first array, must not be <code>null</code>
     * @param array2
     *            the second array, must not be <code>null</code>
     * @return <code>true</code> if type of arrays matches
     * @throws IllegalArgumentException
     *             if either array is <code>null</code>
     */
    public static boolean isSameType(final Object array1, final Object array2) {
        if (array1 == null || array2 == null) {
            throw new IllegalArgumentException("The Array must not be null");
        }
        return array1.getClass().getName().equals(array2.getClass().getName());
    }

    // Reverse
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * There is no special handling for multi-dimensional arrays.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final Object[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        Object tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final long[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        long tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final int[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        int tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final short[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        short tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final char[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        char tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final byte[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        byte tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final double[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        double tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final float[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        float tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    /**
     * <p>
     * Reverses the order of the given array.
     * </p>
     * 
     * <p>
     * This method does nothing if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to reverse, may be <code>null</code>
     */
    public static void reverse(final boolean[] array) {
        if (array == null) {
            return;
        }
        int i = 0;
        int j = array.length - 1;
        boolean tmp;
        while (j > i) {
            tmp = array[j];
            array[j] = array[i];
            array[i] = tmp;
            j--;
            i++;
        }
    }

    // IndexOf search
    // ----------------------------------------------------------------------

    // Object IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given object in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param objectToFind
     *            the object to find, may be <code>null</code>
     * @return the index of the object within the array, <code>-1</code> if
     *         not found or <code>null</code> array input
     */
    public static int indexOf(final Object[] array, final Object objectToFind) {
        return indexOf(array, objectToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given object in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return <code>-1</code>.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param objectToFind
     *            the object to find, may be <code>null</code>
     * @param startIndex
     *            the index to start searching at
     * @return the index of the object within the array starting at the index,
     *         <code>-1</code> if not found or <code>null</code> array input
     */
    public static int indexOf(final Object[] array, final Object objectToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        if (objectToFind == null) {
            for (int i = startIndex; i < array.length; i++) {
                if (array[i] == null) {
                    return i;
                }
            }
        } else {
            for (int i = startIndex; i < array.length; i++) {
                if (objectToFind.equals(array[i])) {
                    return i;
                }
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given object within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param objectToFind
     *            the object to find, may be <code>null</code>
     * @return the last index of the object within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final Object[] array, final Object objectToFind) {
        return lastIndexOf(array, objectToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given object in the array starting at the
     * given index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return <code>-1</code>. A startIndex larger
     * than the array length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param objectToFind
     *            the object to find, may be <code>null</code>
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the object within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final Object[] array, final Object objectToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        if (objectToFind == null) {
            for (int i = startIndex; i >= 0; i--) {
                if (array[i] == null) {
                    return i;
                }
            }
        } else {
            for (int i = startIndex; i >= 0; i--) {
                if (objectToFind.equals(array[i])) {
                    return i;
                }
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the object is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param objectToFind
     *            the object to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final Object[] array, final Object objectToFind) {
        return (indexOf(array, objectToFind) != -1);
    }

    // long IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final long[] array, final long valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final long[] array, final long valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final long[] array, final long valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final long[] array, final long valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final long[] array, final long valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    // int IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final int[] array, final int valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final int[] array, final int valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final int[] array, final int valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final int[] array, final int valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final int[] array, final int valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    // short IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final short[] array, final short valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final short[] array, final short valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final short[] array, final short valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final short[] array, final short valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final short[] array, final short valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    // byte IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final byte[] array, final byte valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final byte[] array, final byte valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final byte[] array, final byte valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final byte[] array, final byte valueToFind, int startIndex) {
        if (array == null) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final byte[] array, final byte valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    // double IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final double[] array, final double valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value within a given tolerance in the array.
     * This method will return the index of the first value which falls between
     * the region defined by valueToFind - tolerance and valueToFind +
     * tolerance.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param tolerance
     *            tolerance of the search
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final double[] array, final double valueToFind, final double tolerance) {
        return indexOf(array, valueToFind, 0, tolerance);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final double[] array, final double valueToFind, int startIndex) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index. This method will return the index of the first value which falls
     * between the region defined by valueToFind - tolerance and valueToFind +
     * tolerance.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @param tolerance
     *            tolerance of the search
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final double[] array, final double valueToFind, int startIndex, double tolerance) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        double min = valueToFind - tolerance;
        double max = valueToFind + tolerance;
        for (int i = startIndex; i < array.length; i++) {
            if (array[i] >= min && array[i] <= max) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final double[] array, final double valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value within a given tolerance in the
     * array. This method will return the index of the last value which falls
     * between the region defined by valueToFind - tolerance and valueToFind +
     * tolerance.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param tolerance
     *            tolerance of the search
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int lastIndexOf(final double[] array, final double valueToFind, final double tolerance) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE, tolerance);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final double[] array, final double valueToFind, int startIndex) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index. This method will return the index of the last value which falls
     * between the region defined by valueToFind - tolerance and valueToFind +
     * tolerance.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @param tolerance
     *            search for value within plus/minus this amount
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final double[] array, final double valueToFind, int startIndex,
            double tolerance) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        double min = valueToFind - tolerance;
        double max = valueToFind + tolerance;
        for (int i = startIndex; i >= 0; i--) {
            if (array[i] >= min && array[i] <= max) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final double[] array, final double valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    /**
     * <p>
     * Checks if a value falling within the given tolerance is in the given
     * array. If the array contains a value within the inclusive range defined
     * by (value - tolerance) to (value + tolerance).
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search
     * @param valueToFind
     *            the value to find
     * @param tolerance
     *            the array contains the tolerance of the search
     * @return true if value falling within tolerance is in array
     */
    public static boolean contains(final double[] array, final double valueToFind, final double tolerance) {
        return (indexOf(array, valueToFind, 0, tolerance) != -1);
    }

    // float IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final float[] array, final float valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final float[] array, final float valueToFind, int startIndex) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final float[] array, final float valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final float[] array, final float valueToFind, int startIndex) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final float[] array, final float valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    // boolean IndexOf
    //-----------------------------------------------------------------------
    /**
     * <p>
     * Find the index of the given value in the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final boolean[] array, final boolean valueToFind) {
        return indexOf(array, valueToFind, 0);
    }

    /**
     * <p>
     * Find the index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex is treated as zero. A startIndex larger than the
     * array length will return -1.
     * </p>
     * 
     * @param array
     *            the array to search through for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the index to start searching at
     * @return the index of the value within the array, <code>-1</code> if not
     *         found or <code>null</code> array input
     */
    public static int indexOf(final boolean[] array, final boolean valueToFind, int startIndex) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            startIndex = 0;
        }
        for (int i = startIndex; i < array.length; i++) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Find the last index of the given value within the array.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * @param array
     *            the array to travers backwords looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the object to find
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final boolean[] array, final boolean valueToFind) {
        return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
    }

    /**
     * <p>
     * Find the last index of the given value in the array starting at the given
     * index.
     * </p>
     * 
     * <p>
     * This method returns <code>-1</code> if <code>null</code> array input.
     * </p>
     * 
     * <p>
     * A negative startIndex will return -1. A startIndex larger than the array
     * length will search from the end of the array.
     * </p>
     * 
     * @param array
     *            the array to traverse for looking for the object, may be
     *            <code>null</code>
     * @param valueToFind
     *            the value to find
     * @param startIndex
     *            the start index to travers backwards from
     * @return the last index of the value within the array, <code>-1</code>
     *         if not found or <code>null</code> array input
     */
    public static int lastIndexOf(final boolean[] array, final boolean valueToFind, int startIndex) {
        if (array == null || array.length == 0) {
            return -1;
        }
        if (startIndex < 0) {
            return -1;
        } else if (startIndex >= array.length) {
            startIndex = array.length - 1;
        }
        for (int i = startIndex; i >= 0; i--) {
            if (valueToFind == array[i]) {
                return i;
            }
        }
        return -1;
    }

    /**
     * <p>
     * Checks if the value is in the given array.
     * </p>
     * 
     * <p>
     * The method returns <code>false</code> if a <code>null</code> array is
     * passed in.
     * </p>
     * 
     * @param array
     *            the array to search through
     * @param valueToFind
     *            the value to find
     * @return <code>true</code> if the array contains the object
     */
    public static boolean contains(final boolean[] array, final boolean valueToFind) {
        return (indexOf(array, valueToFind) != -1);
    }

    // Primitive/Object array converters
    // ----------------------------------------------------------------------

    // Long array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Longs to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Long</code> array, may be <code>null</code>
     * @return a <code>long</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static long[] toPrimitive(final Long[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_LONG_ARRAY;
        }
        final long[] result = new long[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].longValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Long to primitives handling <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Long</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return a <code>long</code> array, <code>null</code> if null array
     *         input
     */
    public static long[] toPrimitive(final Long[] array, final long valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_LONG_ARRAY;
        }
        final long[] result = new long[array.length];
        for (int i = 0; i < array.length; i++) {
            Long b = array[i];
            result[i] = (b == null ? valueForNull : b.longValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive longs to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>long</code> array
     * @return a <code>Long</code> array, <code>null</code> if null array
     *         input
     */
    public static Long[] toObject(final long[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_LONG_OBJECT_ARRAY;
        }
        final Long[] result = new Long[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = new Long(array[i]);
        }
        return result;
    }

    // Int array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Integers to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Integer</code> array, may be <code>null</code>
     * @return an <code>int</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static int[] toPrimitive(final Integer[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_INT_ARRAY;
        }
        final int[] result = new int[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].intValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Integer to primitives handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Integer</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return an <code>int</code> array, <code>null</code> if null array
     *         input
     */
    public static int[] toPrimitive(final Integer[] array, final int valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_INT_ARRAY;
        }
        final int[] result = new int[array.length];
        for (int i = 0; i < array.length; i++) {
            Integer b = array[i];
            result[i] = (b == null ? valueForNull : b.intValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive ints to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            an <code>int</code> array
     * @return an <code>Integer</code> array, <code>null</code> if null
     *         array input
     */
    public static Integer[] toObject(final int[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_INTEGER_OBJECT_ARRAY;
        }
        final Integer[] result = new Integer[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = new Integer(array[i]);
        }
        return result;
    }

    // Short array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Shorts to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Short</code> array, may be <code>null</code>
     * @return a <code>byte</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static short[] toPrimitive(final Short[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_SHORT_ARRAY;
        }
        final short[] result = new short[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].shortValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Short to primitives handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
        
     *            a <code>Short</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return a <code>byte</code> array, <code>null</code> if null array
     *         input
     */
    public static short[] toPrimitive(final Short[] array, final short valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_SHORT_ARRAY;
        }
        final short[] result = new short[array.length];
        for (int i = 0; i < array.length; i++) {
            Short b = array[i];
            result[i] = (b == null ? valueForNull : b.shortValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive shorts to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>short</code> array
     * @return a <code>Short</code> array, <code>null</code> if null array
     *         input
     */
    public static Short[] toObject(final short[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_SHORT_OBJECT_ARRAY;
        }
        final Short[] result = new Short[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = new Short(array[i]);
        }
        return result;
    }

    // Byte array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Bytes to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Byte</code> array, may be <code>null</code>
     * @return a <code>byte</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static byte[] toPrimitive(final Byte[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BYTE_ARRAY;
        }
        final byte[] result = new byte[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].byteValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Bytes to primitives handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Byte</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return a <code>byte</code> array, <code>null</code> if null array
     *         input
     */
    public static byte[] toPrimitive(final Byte[] array, final byte valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BYTE_ARRAY;
        }
        final byte[] result = new byte[array.length];
        for (int i = 0; i < array.length; i++) {
            Byte b = array[i];
            result[i] = (b == null ? valueForNull : b.byteValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive bytes to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>byte</code> array
     * @return a <code>Byte</code> array, <code>null</code> if null array
     *         input
     */
    public static Byte[] toObject(final byte[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BYTE_OBJECT_ARRAY;
        }
        final Byte[] result = new Byte[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = new Byte(array[i]);
        }
        return result;
    }

    // Double array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Doubles to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Double</code> array, may be <code>null</code>
     * @return a <code>double</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static double[] toPrimitive(final Double[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_DOUBLE_ARRAY;
        }
        final double[] result = new double[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].doubleValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Doubles to primitives handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Double</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return a <code>double</code> array, <code>null</code> if null array
     *         input
     */
    public static double[] toPrimitive(final Double[] array, final double valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_DOUBLE_ARRAY;
        }
        final double[] result = new double[array.length];
        for (int i = 0; i < array.length; i++) {
            Double b = array[i];
            result[i] = (b == null ? valueForNull : b.doubleValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive doubles to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>double</code> array
     * @return a <code>Double</code> array, <code>null</code> if null array
     *         input
     */
    public static Double[] toObject(final double[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_DOUBLE_OBJECT_ARRAY;
        }
        final Double[] result = new Double[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = new Double(array[i]);
        }
        return result;
    }

    //   Float array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Floats to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Float</code> array, may be <code>null</code>
     * @return a <code>float</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static float[] toPrimitive(final Float[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_FLOAT_ARRAY;
        }
        final float[] result = new float[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].floatValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Floats to primitives handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Float</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return a <code>float</code> array, <code>null</code> if null array
     *         input
     */
    public static float[] toPrimitive(final Float[] array, final float valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_FLOAT_ARRAY;
        }
        final float[] result = new float[array.length];
        for (int i = 0; i < array.length; i++) {
            Float b = array[i];
            result[i] = (b == null ? valueForNull : b.floatValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive floats to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>float</code> array
     * @return a <code>Float</code> array, <code>null</code> if null array
     *         input
     */
    public static Float[] toObject(final float[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_FLOAT_OBJECT_ARRAY;
        }
        final Float[] result = new Float[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = new Float(array[i]);
        }
        return result;
    }

    // Boolean array converters
    // ----------------------------------------------------------------------
    /**
     * <p>
     * Converts an array of object Booleans to primitives.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Boolean</code> array, may be <code>null</code>
     * @return a <code>boolean</code> array, <code>null</code> if null array
     *         input
     * @throws NullPointerException
     *             if array content is <code>null</code>
     */
    public static boolean[] toPrimitive(final Boolean[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BOOLEAN_ARRAY;
        }
        final boolean[] result = new boolean[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = array[i].booleanValue();
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of object Booleans to primitives handling
     * <code>null</code>.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>Boolean</code> array, may be <code>null</code>
     * @param valueForNull
     *            the value to insert if <code>null</code> found
     * @return a <code>boolean</code> array, <code>null</code> if null array
     *         input
     */
    public static boolean[] toPrimitive(final Boolean[] array, final boolean valueForNull) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BOOLEAN_ARRAY;
        }
        final boolean[] result = new boolean[array.length];
        for (int i = 0; i < array.length; i++) {
            Boolean b = array[i];
            result[i] = (b == null ? valueForNull : b.booleanValue());
        }
        return result;
    }

    /**
     * <p>
     * Converts an array of primitive booleans to objects.
     * </p>
     * 
     * <p>
     * This method returns <code>null</code> if <code>null</code> array
     * input.
     * </p>
     * 
     * @param array
     *            a <code>boolean</code> array
     * @return a <code>Boolean</code> array, <code>null</code> if null array
     *         input
     */
    public static Boolean[] toObject(final boolean[] array) {
        if (array == null) {
            return null;
        } else if (array.length == 0) {
            return EMPTY_BOOLEAN_OBJECT_ARRAY;
        }
        final Boolean[] result = new Boolean[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = (array[i] ? Boolean.TRUE : Boolean.FALSE);
        }
        return result;
    }

}