Compilare: user.cpp: In static member function 'static void Sort<T>::Helper::mergeSort(std::vector<T, std::allocator<_CharT> >&, typename std::vector<T, std::allocator<_CharT> >::iterator, typename std::vector<T, std::allocator<_CharT> >::iterator) [with T = long unsigned int]': user.cpp:25: instantiated from 'static void Sort<T>::Merge(std::vector<T, std::allocator<_CharT> >&) [with T = long unsigned int]' user.cpp:183: instantiated from here user.cpp:128: warning: comparison between signed and unsigned integer expressions user.cpp:128: warning: comparison between signed and unsigned integer expressions user.cpp:136: warning: comparison between signed and unsigned integer expressions user.cpp:139: warning: comparison between signed and unsigned integer expressions