input: Write a python function to transpose a matrix.
  assert transposeMatrix([[1, 2, 3], [4, 5, 6], [7, 8, 9]]) == [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
  assert transposeMatrix([[1, 2], [3, 4], [5, 6]]) == [[1, 3, 5], [2, 4, 6]]
  assert transposeMatrix([[1]]) == [[1]]
output: def transposeMatrix(matrix):
      return [list(row) for row in zip(*matrix)]