/in/foo.cc: In member function 'void ComplexArray::bubbleSort()':
/in/foo.cc:68:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Complex>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         for (int i = 0; i < this->size() - 1; ++i)
      |                         ~~^~~~~~~~~~~~~~~~~~
/in/foo.cc:69:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Complex>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |             for (int j = 0; j < this->size() - (i + 1); ++j)
      |                             ~~^~~~~~~~~~~~~~~~~~~~~~~~