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/*
 * Copyright 2016 Carlos Ballesteros Velasco
 *
 * Licensed 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.
 */

package java.util;

public interface Deque extends Queue {
	void addFirst(E e);

	void addLast(E e);

	boolean offerFirst(E e);

	boolean offerLast(E e);

	E removeFirst();

	E removeLast();

	E pollFirst();

	E pollLast();

	E getFirst();

	E getLast();

	E peekFirst();

	E peekLast();

	boolean removeFirstOccurrence(Object o);

	boolean removeLastOccurrence(Object o);

	boolean add(E e);

	boolean offer(E e);

	E remove();

	E poll();

	E element();

	E peek();

	void push(E e);

	E pop();

	boolean remove(Object o);

	boolean contains(Object o);

	public int size();

	Iterator iterator();

	Iterator descendingIterator();
}