template<class T>
void Matris<T>::transpose() {
  T *temp_vec = new T[m_capacity];

  for (int row = 0; row < m_rows; ++row) {
    for (int col = 0; col < m_cols; ++col) {
      temp_vec[col * m_rows + row] = m_vec[row * m_cols + col];
    }
  }

  delete [] m_vec;
  m_vec = temp_vec;

  int temp = m_rows;
  m_rows = m_cols;
  m_cols = temp;
}