Remove duplicate letters in a word

[Roman Suzi]

One more interesting method to do the same:

import sets
def nodups2(s):
  l = map(lambda x: (s.index(x[1]),x[0]), enumerate(sets.Set(s)))
  l.sort()
  return "".join(map(lambda x: s[x[0]], l))

print nodups2('secret')


This implementation uses the fact that index gives the first 
encounter of a symbol in a string.


Sincerely yours, Roman Suzi
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