/*
* Copyright (c) 2011, grossmann
* All rights reserved.
*
* 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 the jo-widgets.org 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 jo-widgets.org 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 org.jowidgets.util;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Set;
public final class ArrayUtils {
private ArrayUtils() {}
public static int getMin(final int[] array) {
if (array == null || array.length == 0) {
throw new IllegalArgumentException("Parameter 'array' must not be null or empty.");
}
int min = array[0];
for (int i = 1; i < array.length; i++) {
if (array[i] < min) {
min = array[i];
}
}
return min;
}
public static int getMax(final int[] array) {
if (array == null || array.length == 0) {
throw new IllegalArgumentException("Parameter 'array' must not be null or empty.");
}
int max = array[0];
for (int i = 1; i < array.length; i++) {
if (array[i] > max) {
max = array[i];
}
}
return max;
}
public static int[] toArray(final Collection<Integer> collection) {
if (collection == null || collection.isEmpty()) {
return new int[0];
}
final int[] result = new int[collection.size()];
int index = 0;
for (final Integer integer : collection) {
result[index] = integer.intValue();
index++;
}
return result;
}
public static <TYPE> Set<TYPE> toSet(final TYPE[] array) {
if (array == null) {
return Collections.emptySet();
}
final Set<TYPE> result = new HashSet<TYPE>();
for (int i = 0; i < array.length; i++) {
result.add(array[i]);
}
return result;
}
public static <TYPE> Iterator<TYPE> toIterator(final TYPE[] array) {
Assert.paramNotNull(array, "array");
return new Iterator<TYPE>() {
private int index = 0;
@Override
public boolean hasNext() {
if (index < array.length) {
return true;
}
else {
return false;
}
}
@Override
public TYPE next() {
if (!hasNext()) {
throw new NoSuchElementException("No more elements available");
}
else {
return array[index++];
}
}
@Override
public void remove() {
throw new UnsupportedOperationException("Cannot remove elements from the array");
}
};
}
}