input: Write a function to convert an array of objects to their JSON string representation using json.dumps.
  assert array_obj_to_json([{"name": "John", "age": 30}, {"name": "Jane", "age": 25}]) == ['{"name": "John", "age": 30}', '{"name": "Jane", "age": 25}']
  assert array_obj_to_json([{"city": "New York", "population": 8000000}, {"city": "Los Angeles", "population": 4000000}]) == ['{"city": "New York", "population": 8000000}', '{"city": "Los Angeles", "population": 4000000}']
  assert array_obj_to_json([{"fruit": "Apple", "color": "Red"}, {"fruit": "Banana", "color": "Yellow"}]) == ['{"fruit": "Apple", "color": "Red"}', '{"fruit": "Banana", "color": "Yellow"}']
output: import json
  
  def array_obj_to_json(array):
      return [json.dumps(obj) for obj in array]