/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - 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.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND 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.
 */
package de.intarsys.tools.collection;

import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

public class ArrayTools {

	public static Object createFromList(Class objectClass, List list) {
		Object array = Array.newInstance(objectClass, list.size());
		int index = 0;
		for (Iterator i = list.iterator(); i.hasNext(); index++) {
			Object element = i.next();
			Array.set(array, index, element);
		}
		return array;
	}

	public static void reverse(byte[] array) {
		reverse(array, 0, array.length);
	}

	public static void reverse(byte[] array, int index, int length) {
		byte temp;
		for (int i = 0; i < length / 2; i++) {
			temp = array[index + i];
			array[index + i] = array[index + length - i - 1];
			array[index + length - i - 1] = temp;
		}
	}

	public static <T> void reverse(T[] array) {
		reverse(array, 0, array.length);
	}

	public static <T> void reverse(T[] array, int index, int length) {
		T temp;
		for (int i = 0; i < length / 2; i++) {
			temp = array[index + i];
			array[index + i] = array[index + length - i - 1];
			array[index + length - i - 1] = temp;
		}
	}

	public static Object toArray(Class clazz, Collection collection) {
		return collection.toArray((Object[]) Array.newInstance(clazz,
				collection.size()));
	}

	private ArrayTools() {
	}
}
