input: Write a python function to create an array of floats from 0.0 to 10.0 with step size 1.0.
  assert create_float_array()==[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0]
  assert create_float_array()[-1]==10.0
output: def create_float_array():
      return [float(x) for x in range(11)]