neighbourhood.cpp

# include <cstdlib>
# include <iostream>
# include <iomanip>
# include <fstream>
# include <cmath>
# include <ctime>
# include <cstring>

# include "neighbourhood.h"

using namespace std;
namespace pagmo{ namespace util {namespace neighbourhood {

void euclidian::compute_neighbours(std::vector<std::vector<pagmo::population::size_type> > &retval, const std::vector<std::vector<double> > &weights) {
        for(unsigned int i = 0; i < weights.size(); ++i) {
                std::vector<double> distances;
                for(unsigned int j = 0; j < weights.size(); ++j) {
                        distances.push_back(distance(weights[i],weights[j]));
                }
                retval.push_back(order(distances));
        }
}

double euclidian::distance(const std::vector<double> &a, const std::vector<double> &b) {
        double rtr = 0.0;
        for(std::vector<double>::size_type i = 0; i < a.size(); ++i) {
                rtr += pow(a[i]-b[i], 2);
        }
        return sqrt(rtr);
}

}}} //namespaces