Do one of the following programming problems:
Anagram
  Write a function is_anagram(word_1, word_2).  Your
  function return True if word_1 is an anagram
  of word_2.  Two words are anagrams if every letter
  (ignoring spaces and punctuation)
  occurs with the same frequency in both strings.
Is Integer
  Write a function called is_integer(text) that has a
  single parameter string parameter, text.  The function
  should return True if text is an integer expressed
  entirely as digits and False otherwise.  The function
  should not use any string methods.