text: # Remove duplicate characters from string
  
  def remove_dup_chars(input_str):
    dedupe_str = ''
  
    for char in input_str:
      if char not in dedupe_str:
        dedupe_str += char
  
    return dedupe_str
  
  result = remove_dup_chars("zmaxxazkgv")
  print(result)  # zmaxxazkgv
  