Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2013 Game Salutes.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v3
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 * 
 * Contributors:
 *     Game Salutes - Repackaging and modifications of original work under University of Chicago and Apache License 2.0 shown below
 * 
 * Repackaging from edu.uchicago.nsit.iteco.utils to com.gamesalutes.utils
 * 
 * Copyright 2008 - 2011 University of Chicago
 * 
 * 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.
 ******************************************************************************/

import java.util.*;

public class Main {
    /**
     * Returns a new <code>ArrayList</code> containing only those elements
     * in <code>origList</code> that are also present in <code>universe</code>.
     * This method is meant to be a faster alternative to <code>Collection.retainAll</code>
     * for <code>ArrayList</code> since removal operations take O(n) in <code>ArrayList</code>.
     * 
     * @param <E> type of element
     * @param origList original element <code>ArrayList</code>
     * @param universe <code>Set</code> of all valid elements
     * @return new <code>ArrayList</code> containing only those elements
     *         in <code>origList</code> that are also present in <code>universe</code>
     */
    public static <E> ArrayList<E> retainAll(ArrayList<E> origList, Set<E> universe) {
        ArrayList<E> newElms = new ArrayList<E>(origList.size());
        for (E elm : origList) {
            if (universe.contains(elm))
                newElms.add(elm);
        }
        return newElms;
    }
}