Pop values from a stl: C++ vector using reverse and pop_back() function.

vector<string> vvv;
vvv.push_back("1");
vvv.push_back("2");
vvv.push_back("3");
// vvv -> 1, 2 3
reverse(vvv.begin(),vvv.end());
// vvv -> 3, 2, 1
string front=vvv.back();
// front -> 1
vvv.pop_back();
// vvv -> 3, 2