munkres.h

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/*
 *   Copyright (c) 2007 John Weaver
 *
 *   This program 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.
 *
 *   This program 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 this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#if !defined(_MUNKRES_H_)
#define _MUNKRES_H_

#include "matrix.h"

#include <list>
#include <utility>


class Munkres {
public:
  void solve(Matrix<double> &m);
private:
  static const int NORMAL = 0;
  static const int STAR = 1;
  static const int PRIME = 2; 
  inline bool find_uncovered_in_matrix(double, unsigned int&, unsigned int&) const;
  inline bool pair_in_list(const std::pair<int,int> &, const std::list<std::pair<int,int> > &);
  int step1(void);
  int step2(void);
  int step3(void);
  int step4(void);
  int step5(void);
  int step6(void);

  Matrix<int> mask_matrix;
  Matrix<double> matrix;
  bool *row_mask;
  bool *col_mask;
  unsigned int saverow, savecol;
};

#endif /* !defined(_MUNKRES_H_) */