input: def removeDuplicates(arr):
   """
   Given an array of strings, remove all duplicates and return the resulting array.
   >>> removeDuplicates(['a', 'b', 'a', 'c', 'c', 'd'])
   ['a', 'b', 'c', 'd']
   >>> removeDuplicates(['apple', 'banana', 'apple', 'cherry', 'banana'])
   ['apple', 'banana', 'cherry']
   >>> removeDuplicates([])
   []
   """
   
   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
  