/in/foo.cc: In member function 'void ComplexArray::BubbleSort()':
/in/foo.cc:51:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < array.size()-1;i++)//!!!array.size() - 1
                   ~~^~~~~~~~~~~~~~~~
/in/foo.cc:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = 0; j < array.size()-i-1; j++)//!!!array.size()-i-1
                    ~~^~~~~~~~~~~~~~~~~~