c++ - reversing values in two multimaps -

#include <map> #include <iostream> #include <string>  using namespace std;  // dwa 1 // dwa 4 // jeden 1 // jeden 2 // piec 5  int main() {      multimap1<string,int>;     multimap2<int,string>;      return 0;  } 

for code, how 1 can assign multimap 2 multimap 1 , recieve expected input(commented section of code)

something following :

  std::multimap<int,std::string> src;   std::multimap<std::string,int> dst;    std::transform(src.begin(), src.end(), std::inserter(dst, dst.begin()),                             [] (const std::pair<int,std::string> &p) {                            return std::pair<std::string,int>(p.second, p.first);                            }                          ); 

see here