input: Write a function to create a Python script that populates an array with random numbers from 1 to 100 based on the specified array length. If the array length is 0, return an empty array.
  assert populateArray(5)==[random.randint(1, 100) for _ in range(5)]
  assert populateArray(0)==[]
  assert len(populateArray(10))==10
output: def populateArray(length):
      if length == 0:
          return []
      return [random.randint(1, 100) for _ in range(length)]