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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def minimize_matrix(self):
 """ This method finds and returns the permutations that produce the lowest ewald sum calls recursive function to iterate through permutations """

        if self._algo == EwaldMinimizer.ALGO_FAST or \
                        self._algo == EwaldMinimizer.ALGO_BEST_FIRST:
            return self._recurse(self._matrix, self._m_list,
                                 set(range(len(self._matrix))))