计算元素索引的数组，将其添加到集合中。

/*

 * Copyright (c) 2005-2016 Vincent Vandenschrick. All rights reserved.

 *

 *  This file is part of the Jspresso framework.

 *

 *  Jspresso is free software: you can redistribute it and/or modify

 *  it under the terms of the GNU Lesser General Public License as published by

 *  the Free Software Foundation, either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  Jspresso is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU Lesser General Public License for more details.

 *

 *  You should have received a copy of the GNU Lesser General Public License

 *  along with Jspresso.  If not, see <http://www.gnu.org/licenses/>.

 */

//package com.nowjava;

import java.util.ArrayList;// 来 自 n o w j a v a . c o m - 时  代  Java

import java.util.Collection;

import java.util.Iterator;

import java.util.List;


public class Main {

    public static void main(String[] argv) {

        Collection smallCollection = java.util.Arrays.asList("asdf",

                "nowjava.com");

        Collection bigCollection = java.util.Arrays.asList("asdf",

                "nowjava.com");
                /*来自 
                 时代Java - nowjava.com*/

        System.out.println(java.util.Arrays

                .toString(computeDifferenceIndices(smallCollection,

                        bigCollection)));

    }


    /**

     * Computes the array of element indices which where added to a collection.

     *

     * @param smallCollection

     *          the original collection.

     * @param bigCollection

     *          the collection with added elements.

     * @return the the array of element indices which where added to the original

     *         collection

     */

    public static int[] computeDifferenceIndices(

            Collection<?> smallCollection, Collection<?> bigCollection) {

        List<Integer> addedIndices = new ArrayList<>();

        int index = 0;

        for (Iterator<?> ite = bigCollection.iterator(); ite.hasNext(); index++) {

            if (smallCollection == null

                    || !smallCollection.contains(ite.next())) {