80 lines
2 KiB
C++
80 lines
2 KiB
C++
//-----------------------------------------------------------------------------
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// t-eoTwoOptMutation.cpp
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//-----------------------------------------------------------------------------
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#include <set>
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#include <eo>
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#include <eoInt.h>
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#include <eoTwoOptMutation.h>
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//-----------------------------------------------------------------------------
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typedef eoInt<double> Chrom;
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//-----------------------------------------------------------------------------
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double real_value(const Chrom & _chrom)
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{
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double sum = 0;
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for (unsigned i = 0; i < _chrom.size(); i++)
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sum += _chrom[i];
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return sum/_chrom.size();
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}
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//-----------------------------------------------------------------------------
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// Return true if the given chromosome corresponds to a permutation
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bool check_permutation(const Chrom& _chrom){
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unsigned size= _chrom.size();
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std::set<unsigned> verif;
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for(unsigned i=0; i< size; i++){
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if(verif.insert(_chrom[i]).second==false){
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std::cout << " Error: Wrong permutation !" << std::endl;
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std::string s;
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s.append( " Wrong permutation in t-eoShiftMutation");
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throw std::runtime_error( s );
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return false;
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}
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}
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return true;
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}
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int main()
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{
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const unsigned POP_SIZE = 3, CHROM_SIZE = 8;
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unsigned i;
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// a chromosome randomizer
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eoInitPermutation <Chrom> random(CHROM_SIZE);
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// the population:
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eoPop<Chrom> pop;
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// Evaluation
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eoEvalFuncPtr<Chrom> eval( real_value );
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for (i = 0; i < POP_SIZE; ++i)
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{
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Chrom chrom(CHROM_SIZE);
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random(chrom);
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eval(chrom);
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pop.push_back(chrom);
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}
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// a twoOpt mutation
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eoTwoOptMutation <Chrom> twoOpt;
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for (i = 0; i < POP_SIZE; ++i)
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{
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std::cout << " Initial chromosome n°" << i << " : " << pop[i] << "..." << std::endl;
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twoOpt(pop[i]);
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std::cout << " ... becomes : " << pop[i] << " after twoOpt mutation" << std::endl;
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check_permutation(pop[i]);
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}
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return 0;
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}
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//-----------------------------------------------------------------------------
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