input: Write a function to determine if two given strings are anagrams. If they are anagrams return True else return False. If either of the strings is empty then return False.
  def is_anagram(str1, str2):
      if str1 == "" or str2 == "":
          return False
      return sorted(str1) == sorted(str2)
  assert is_anagram("abcd", "cbda")==True
  assert is_anagram("abcd", "abcc")==False
  assert is_anagram("", "cbda")==False
  assert is_anagram("abcd", "")==False
  assert is_anagram("", "")==False
output: def is_anagram(str1, str2):
      if str1 == "" or str2 == "":
          return False
      return sorted(str1) == sorted(str2)