def _flip_horizontally(matrix):
m = Matrix(matrix.num_rows(), matrix.num_columns())
for i in xrange(m.num_rows()):
for j in xrange(m.num_columns()):
m[i][j] = matrix[m.num_rows() - i - 1][j]
return m
def to_matrix(matrix_as_lists):
result = Matrix(len(matrix_as_lists), len(matrix_as_lists[0]))
for i in xrange(result.num_rows()):
for j in xrange(result.num_columns()):
result[i][j] = matrix_as_lists[i][j]
return result
