    001package net.sf.cpsolver.studentsct.heuristics.studentord;
    002
    003import java.util.ArrayList;
    004import java.util.Collections;
    005import java.util.List;
    006
    007import net.sf.cpsolver.ifs.util.DataProperties;
    008import net.sf.cpsolver.studentsct.model.Student;
    009
    010/**
    011 * Return the given set of students in a random order
    012 *
    013 * @version StudentSct 1.2 (Student Sectioning)<br>
    014 *          Copyright (C) 2007 - 2010 Tomáš Müller<br>
    015 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    016 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    017 * <br>
    018 *          This library is free software; you can redistribute it and/or modify
    019 *          it under the terms of the GNU Lesser General Public License as
    020 *          published by the Free Software Foundation; either version 3 of the
    021 *          License, or (at your option) any later version. <br>
    022 * <br>
    023 *          This library is distributed in the hope that it will be useful, but
    024 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    025 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    026 *          Lesser General Public License for more details. <br>
    027 * <br>
    028 *          You should have received a copy of the GNU Lesser General Public
    029 *          License along with this library; if not see
    030 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    031 */
    032public class StudentRandomOrder implements StudentOrder {
    033
    034    public StudentRandomOrder(DataProperties config) {
    035    }
    036
    037    /** Return the given set of students in a random order */
    038    @Override
    039    public List<Student> order(List<Student> students) {
    040        List<Student> ret = new ArrayList<Student>(students);
    041        Collections.shuffle(ret);
    042        return ret;
    043    }
    044
    045}