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Stack automata

stack

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#1 Apprentice123

Apprentice123

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Posted 24 August 2010 - 11:58 AM

For language: a^nb^ma^{n+m}

q0 => (a,E,X) to q0
q0 => (E,E,E) to q1
q1 => (b,E,X) to q1
q1 => (E,E,E) to q2
q2 => (a,X,E) to q2
q2 => (?,?,E) to q3
q3 is end state

E is empty move
? is empty stack

Works for the language => aabbaaaa

But not work if go this route => aabaaa or abbbaaaa

My question is if the automaton is correct
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Also tagged with one or more of these keywords: stack

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