org.cpsolver.exam.neighbours

## Class ExamRoomMove

- java.lang.Object
- - org.cpsolver.exam.neighbours.ExamRoomMove

- All Implemented Interfaces:
    NeighbourSelection<Exam,ExamPlacement>

      public class ExamRoomMove
      extends Object
      implements NeighbourSelection<Exam,ExamPlacement>

  Try to swap a room between two exams. An exam is selected randomly, a different (available) room is randomly selected for the exam -- the exam is assigned into the new room (if the room is used, it tries to swap the rooms between the selected exam and the one that is using it). If an exam is assigned into two or more rooms, only one room is swapped at a time.
  Version:
    ExamTT 1.3 (Examination Timetabling)
    Copyright (C) 2008 - 2014 Tomáš Müller
    muller@unitime.org
    http://muller.unitime.org
    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 3 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 see http://www.gnu.org/licenses/.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ExamRoomMove(DataProperties properties)` Constructor

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `init(Solver<Exam,ExamPlacement> solver)` Initialization
    `Neighbour<Exam,ExamPlacement>` | `selectNeighbour(Solution<Exam,ExamPlacement> solution)` Select an exam randomly, select an available period randomly (if it is not assigned, from `Exam.getPeriodPlacements()`), select rooms using `Exam.findRoomsRandom(Assignment, ExamPeriodPlacement)`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### ExamRoomMove

          public ExamRoomMove(DataProperties properties)

      Constructor
      Parameters:
        `properties` - problem properties

  - ### Method Detail

    - #### init

          public void init(Solver<Exam,ExamPlacement> solver)

      Initialization
      Specified by:
        `init` in interface `NeighbourSelection<Exam,ExamPlacement>`
      Parameters:
        `solver` - current solver

    - #### selectNeighbour

          public Neighbour<Exam,ExamPlacement> selectNeighbour(Solution<Exam,ExamPlacement> solution)

      Select an exam randomly, select an available period randomly (if it is not assigned, from `Exam.getPeriodPlacements()`), select rooms using `Exam.findRoomsRandom(Assignment, ExamPeriodPlacement)`
      Specified by:
        `selectNeighbour` in interface `NeighbourSelection<Exam,ExamPlacement>`
      Parameters:
        `solution` - given solution
      Returns:
        a neighbour assignment