input: Write a function to remove duplicate entries from a list. The function should return a new list with all unique elements in the order they first appeared. If the input list is empty, the function should return an empty list.
  
  
  def removeDuplicates(input):
      final_list = []
      for num in input:
          if num not in final_list:
              final_list.append(num)
      return final_list
  
  assert removeDuplicates([1, 2, 2, 3, 3, 4]) == [1, 2, 3, 4]
  assert removeDuplicates([5, 5, 5, 5, 5]) == [5]
  assert removeDuplicates([1, 2, 3, 4]) == [1, 2, 3, 4]
  assert removeDuplicates([]) == []
  
output: def removeDuplicates(input):
      final_list = []
      for num in input:
          if num not in final_list:
              final_list.append(num)
      return final_list