001    package net.sf.cpsolver.studentsct.heuristics.studentord;
002    
003    import java.util.ArrayList;
004    import java.util.Collections;
005    import java.util.List;
006    
007    import net.sf.cpsolver.ifs.util.DataProperties;
008    import 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 Tomas Muller<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     */
032    public 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    }