garbage.cpp

    std::string temp = "bbbbcdfagg";
    std::sort(temp.begin(), temp.end());
    int count = 1;
    char last = *temp.cbegin();
    std::map<int, std::string> tempMap;
    for (auto&& itr = temp.cbegin()+1; itr != temp.cend(); ++itr)
    {
        if (*itr == last)
        {
            ++count;
            if(itr+1 != temp.cend())
                continue;
        }

        tempMap[count] += last;
        count = 1;
        last = *itr;
    }
    for (auto && thing : tempMap)
    {
        std::cout << thing.first << " " << thing.second << std::endl;
    }