(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Can someone explain the condition that DFA(Deterministic finite automaton) take as an accepting state and rejecting state?

2. Relevant equations

http://img641.imageshack.us/img641/8387/dfao.jpg

3. The attempt at a solution

I have tried analyzing through it, but it seems pretty random to me.

It accepts: empty,ab, ba, abab, baba, aabb, bbaa, bbb, aaa, bbaaab, aabbba,....

Rejects: a, aa, aab, aba, b, baa, bb, bba, bbaaa, ....

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# What does this Deterministic finite automaton do?

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