Android List Reverse reverse(List list, final int begin, final int end)

Description

reverse

License

Open Source License

Declaration

public static <E> void reverse(List<E> list, final int begin,
            final int end) 

Method Source Code

//package com.java2s;
/**//from   ww  w. j  a  va2  s .com
 * RxDroid - A Medication Reminder
 * Copyright (C) 2011-2014 Joseph Lehner <joseph.c.lehner@gmail.com>
 *
 *
 * RxDroid is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version. Additional terms apply (see LICENSE).
 *
 * RxDroid 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with RxDroid.  If not, see <http://www.gnu.org/licenses/>.
 *
 *
 */

import java.util.ArrayList;

import java.util.List;

public class Main {
    public static <E> void reverse(List<E> list, final int begin,
            final int end) {
        if (end <= begin)
            throw new IllegalArgumentException("end <= begin");

        if (end - begin == 1)
            return;

        List<E> reversed = new ArrayList<E>(end - begin);

        for (int i = begin; i != end; ++i) {
            final int j = begin + (end - i - 1);
            reversed.add(list.get(j));
        }

        for (int i = 0; i != reversed.size(); ++i)
            list.set(begin + i, reversed.get(i));
    }
}

Related

1. invertList(List list)
2. reverse(List list)