input: Write a function to populate an array with random numbers from 1 to 100. The function should accept an integer `array_length` representing the length of the array to be populated, and it should return the populated array.
  
  assert populateArray(5)
  assert populateArray(10)
output: import random
  
  def populateArray(array_length):
      return [random.randint(1, 100) for _ in range(array_length)]