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Homework Help: NFA for this language

  1. Apr 4, 2012 #1
    1. The problem statement, all variables and given/known data


    I need to make an NFA for this language:

    L = {s \in {0, 1, 2}* : the integer value pf s in ternary notation is one less than a multiple of 4}

    2. Relevant equations

    3. The attempt at a solution

    I've written out and looked at the ternary notions for accepting strings, but can't seem to find a pattern. It seems that the last bit is in a cycling of 012 and the second last bit is a cycle of 120, 201, 012.

    Is there a better approach to this?
  2. jcsd
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