001package org.cpsolver.coursett.preference;
002
003/**
004 * Average preference combination. <br>
005 * <ul>
006 * <li>If at least one preference is required &rarr; required
007 * <li>If at least one preference is prohibited &rarr; prohibited
008 * <li>Otherwise, mean value from the given preferences is returned
009 * </ul>
010 * 
011 * @version CourseTT 1.3 (University Course Timetabling)<br>
012 *          Copyright (C) 2006 - 2014 Tomáš Müller<br>
013 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
014 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
015 * <br>
016 *          This library is free software; you can redistribute it and/or modify
017 *          it under the terms of the GNU Lesser General Public License as
018 *          published by the Free Software Foundation; either version 3 of the
019 *          License, or (at your option) any later version. <br>
020 * <br>
021 *          This library is distributed in the hope that it will be useful, but
022 *          WITHOUT ANY WARRANTY; without even the implied warranty of
023 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
024 *          Lesser General Public License for more details. <br>
025 * <br>
026 *          You should have received a copy of the GNU Lesser General Public
027 *          License along with this library; if not see
028 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
029 */
030public class AveragePreferenceCombination extends PreferenceCombination {
031    int iPreference = 0;
032    int iCnt = 0;
033
034    @Override
035    public void addPreferenceInt(int intPref) {
036        super.addPreferenceInt(intPref);
037        iPreference += intPref;
038        iCnt++;
039    }
040
041    @Override
042    public int getPreferenceInt() {
043        return Math.round(((float) iPreference) / ((float) iCnt));
044    }
045}