// Preparing a lovely in string stream
std::istringstream iss(outputString);
// Smash output string into its smaller pieves and shove it into the vector
std::vector<std::string> splitString{ std::istream_iterator<std::string>(iss), {} };
// Reverse it so the parsable string is actually right
std::reverse(splitString.begin(), splitString.end());
// Preparing an output string stream to smoosh things back together
std::ostringstream oss;
// Smash that vector back together againg
std::copy(splitString.begin(), splitString.end(), std::ostream_iterator<std::string>(oss, " "));
// Put it back in the lovely output string
outputString = oss.str();