container_pairing

This code is for combining the containers. http://en.cppreference.com/w/cpp/concept/Container specifications for containers must hold for this solution to run. Containers such as list, set, vector, deque work with this solution. However since for std::array container size() function does not hold or for std::stack container begin() function does not hold, these containers will not work with this solution. size() or begin() were among the functions specified in the link.