Java List Sort isEqualList(final List list1, final List list2, Comparator c, boolean sortList)

Description

is Equal List

License

Open Source License

Declaration

public static <T> boolean isEqualList(final List<T> list1, final List<T> list2, Comparator<? super T> c,
            boolean sortList) 

Method Source Code

//package com.java2s;
/* /*from   w  ww.j  ava  2s.  co  m*/
 * Motu, a high efficient, robust and Standard compliant Web Server for Geographic
 * Data Dissemination.
 *
 * http://cls-motu.sourceforge.net/
 *
 * (C) Copyright 2009-2010, by CLS (Collecte Localisation Satellites) - 
 * http://www.cls.fr - and  Contributors
 *
 *
 * This library 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 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

import java.util.Collections;
import java.util.Comparator;

import java.util.Iterator;
import java.util.List;

public class Main {
    public static <T> boolean isEqualList(final List<T> list1, final List<T> list2, Comparator<? super T> c,
            boolean sortList) {
        if (list1 == list2) {
            return true;
        }
        if (list1 == null || list2 == null || list1.size() != list2.size()) {
            return false;
        }

        if (sortList) {
            Collections.sort(list1, c);
            Collections.sort(list2, c);
        }

        Iterator<T> it1 = list1.iterator();
        Iterator<T> it2 = list2.iterator();
        T obj1 = null;
        T obj2 = null;

        while (it1.hasNext() && it2.hasNext()) {
            obj1 = it1.next();
            obj2 = it2.next();

            if ((obj1 == null) && (obj2 != null)) {
                return false;
            }
            if ((obj1 != null) && (obj2 == null)) {
                return false;
            }
            if (c.compare(obj1, obj2) != 0) {
                return false;
            }
        }

        return !(it1.hasNext() || it2.hasNext());
    }
}

Related

1. getSortedList(Collection collection)
2. getSortedList(Set items)
3. getSortedStringList(List pathList)
4. getZipfPlotData(List sortedCount)
5. interpolateLinearlyQuantile(List sortedDataAscendingOrder, Double p)
6. isSorted(Iterable list)
7. isSorted(List list)
8. isSorted(List list)
9. isSorted(List> items, boolean asc)