code: //==============================================================================
  //	
  //	Copyright (c) 2013-
  //	Authors:
  //	* Ernst Moritz Hahn <emhahn@cs.ox.ac.uk> (University of Oxford)
  //	
  //------------------------------------------------------------------------------
  //	
  //	This file is part of PRISM.
  //	
  //	PRISM 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 2 of the License, or
  //	(at your option) any later version.
  //	
  //	PRISM 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 PRISM; if not, write to the Free Software Foundation,
  //	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //	
  //==============================================================================
  
  package param;
  
  /**
   * Simple scheduler for a parametric model.
   * Assigns a single nonrandomised decision to each state of the model.
   * 
   * @author Ernst Moritz Hahn <emhahn@cs.ox.ac.uk> (University of Oxford)
   */
  final class Scheduler {
  	/** represents the choice taken for each state */
  	private int[] choices;
  	
  	/**
  	 * Constructs a new scheduler for {@code model}.
  	 * The scheduler is legal, but not necessarily optimal in any sense.
  	 * 
  	 * @param model model to generate scheduler for
  	 */
  	Scheduler(ParamModel model)
  	{
  		choices = new int[model.getNumStates()];
  		for (int state = 0; state < model.getNumStates(); state++) {
  			choices[state] = model.stateEnd(state) - 1;
  		}
  	}
  
  	/** Copy constructor */
  	Scheduler(Scheduler other)
  	{
  		choices = other.choices.clone();
  	}
  
  	@Override
  	public Scheduler clone()
  	{
  		return new Scheduler(this);
  	}
  
  	/**
  	 * Set choice for given state.
  	 * 
  	 * @param state state to set choice for
  	 * @param choice choice to set for given state 
  	 */
  	void setChoice(int state, int choice) {
  		choices[state] = choice;
  	}
  	
  	/**
  	 * Get choice for given state.
  	 * 
  	 * @param state state to get choice of
  	 * @return choice for given state
  	 */
  	int getChoice(int state) {
  		return choices[state];
  	}
  	
  	@Override
  	public boolean equals(Object obj) {
  		if (!(obj instanceof Scheduler)) {
  			return false;
  		}
  		Scheduler other = (Scheduler) obj;
  		for (int state = 0; state < choices.length; state++) {
  			if (this.choices[state] != other.choices[state]) {
  				return false;
  			}
  		}
  		return true;
  	}
  	
  	@Override
  	public int hashCode() {
  		int hash = 0;
  		
  		for (int state = 0; state < choices.length; state++) {
  			hash = choices[state] + (hash << 6) + (hash << 16) - hash;
  		}
  		
  		return hash;
  	}
  }
  