/*
 * Copyright (c) Welsiton Ferreira (wfcreations@gmail.com)
 * 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 WFCreation 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 HOLDER 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 br.com.wfcreations.lang;

import java.util.HashSet;
import java.util.Set;

public abstract class ArrayUtils {

	public static <T> boolean hasDuplicate(T[] array) {
		Set<T> tempSet = new HashSet<T>();
		for (T element : array)
			if (!tempSet.add(element))
				return true;
		return false;
	}

	public static <T> T[] addAll(T[] array, T... element) {
		// TODO
		return null;
	}

	public static <T> T[] concat(T[] array1, T[] array2) {
		// T[] result = new T[array1.length + array2.length];
		// TODO
		return null;
	}
}
/*
 * Copyright (c) Welsiton Ferreira (wfcreations@gmail.com)
 * 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 WFCreation 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 HOLDER 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 br.com.wfcreations.lang;

import java.lang.reflect.Array;
import java.util.HashSet;
import java.util.Set;

public abstract class ArrayUtils {

	public static <T> boolean hasDuplicate(T[] array) {
		Set<T> tempSet = new HashSet<T>();
		for (T element : array)
			if (!tempSet.add(element))
				return true;
		return false;
	}

	/*
	 * Copy from apache/commons-lang (ArrayUtils)
	 * 
	 * Licensed to the Apache Software Foundation (ASF) under one or more
	 * contributor license agreements. See the NOTICE file distributed with this
	 * work for additional information regarding copyright ownership. The ASF
	 * licenses this file to You under the Apache License, Version 2.0 (the
	 * "License"); you may not use this file except in compliance with the
	 * License. You may obtain a copy of the License at
	 * 
	 * http://www.apache.org/licenses/LICENSE-2.0
	 * 
	 * Unless required by applicable law or agreed to in writing, software
	 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
	 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
	 * License for the specific language governing permissions and limitations
	 * under the License.
	 */
	@SafeVarargs
	public static <T> T[] addAll(final T[] array, final T... elements) {
		if (array == null) {
			return clone(elements);
		} else if (elements == null) {
			return clone(array);
		}
		final Class<?> type1 = array.getClass().getComponentType();
		@SuppressWarnings("unchecked")
		final T[] joinedArray = (T[]) Array.newInstance(type1, array.length + elements.length);
		System.arraycopy(array, 0, joinedArray, 0, array.length);
		try {
			System.arraycopy(elements, 0, joinedArray, array.length, elements.length);
		} catch (final ArrayStoreException ase) {
			final Class<?> type2 = elements.getClass().getComponentType();
			if (!type1.isAssignableFrom(type2)) {
				throw new IllegalArgumentException("Cannot store " + type2.getName() + " in an array of " + type1.getName(), ase);
			}
			throw ase;
		}
		return joinedArray;
	}

	public static <T> T[] clone(final T[] array) {
		if (array == null)
			return null;
		return array.clone();
	}
}
update array addAll