input: from typing import List
  
  def removeDuplicates(arr: List[str]) -> List[str]:
      """
      Function to remove all duplicates from the given array of strings and return the resulting array.
      
      >>> removeDuplicates(['a', 'b', 'a', 'c', 'c', 'd'])
      ['a', 'b', 'c', 'd']
      >>> removeDuplicates(['apple', 'banana', 'apple', 'banana', 'orange'])
      ['apple', 'banana', 'orange']
      """
      
      result = []
      
      # traverse for all elements 
      for i in arr: 
          
          # check if exists in result 
          if i not in result: 
              result.append(i) 
      
      # return result 
      return result
  
output:     result = []
      
      # traverse for all elements 
      for i in arr: 
          
          # check if exists in result 
          if i not in result: 
              result.append(i) 
      
      # return result 
      return result