t-eoInitPermutation.cpp

//-----------------------------------------------------------------------------
// t-eoInitPermutation.cpp
//-----------------------------------------------------------------------------

#include <eo>

#include <eoInt.h>

//-----------------------------------------------------------------------------

typedef eoInt<double> Chrom;

//-----------------------------------------------------------------------------


double real_value(const Chrom & _chrom)
{
  double sum = 0;
  for (unsigned i = 0; i < _chrom.size(); i++)
      sum += _chrom[i];
  return sum/_chrom.size();
}

// Return true if the given chromosome corresponds to a permutation
// There must be an nicer way to do it (set?) ...
bool check_permutation(const Chrom & _chrom)
{
        for (unsigned i = 0; i < _chrom.size(); ++i)
                for (unsigned j = 0; j < _chrom.size(); ++j)
                        if(i!=j)
                                if(_chrom[i]==_chrom[j]){
                                                 std::cout << " Error: Wrong permutation !" << std::endl;
                                                 std::string s;
                                                 s.append( " Wrong permutation in t-eoInitPermutation");
                                         throw std::runtime_error( s );
                                }
        return true;
}

int main()
{
  const unsigned POP_SIZE = 8, CHROM_SIZE = 16;
  unsigned i;

   // a chromosome randomizer
  eoInitPermutation <Chrom> random(CHROM_SIZE);

   // the population:
  eoPop<Chrom> pop;

   // Evaluation
  eoEvalFuncPtr<Chrom> eval(  real_value );

  for (i = 0; i < POP_SIZE; ++i)
    {
      Chrom chrom(CHROM_SIZE);
      std::cout << " Initial chromosome n°" << i << " : " << chrom << "..." <<  std::endl;
      random(chrom);
      eval(chrom);
      std::cout << " ... becomes : " << chrom << " after initialization" << std::endl;
      check_permutation(chrom);
      pop.push_back(chrom);
    }

  return 0;
}

//-----------------------------------------------------------------------------