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Old 08-15-2007, 04:41 PM
bladeb2k bladeb2k is offline
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Turing machine Help please!!
Can anyone help me with this problem or point me in the direction of somewhere that can, i wuld be extreamly grateful.

Q) The range of data to be accepted by the program has been extended to allow numbers to be grouped within parenthesis eg. 01,{01,0,{10,1,{0,1},{1}}},1

Design a Turing machine which will check for correctly formatted data. In this version the restriction of 0 being only represented by a single symbol need not be adhered to. The TM should check for correctly matched {and} but need not detect misplaced commas (as in, eg. {0,}).

You should assume:

i) the data is initially positioned on an otherwise blank tape (i.e. all spaces) with the TM's reading head above the first character.

ii) All commas are legally placed but {and} may not be

iii) the TM will end in one of the following states:

VALID DATA

TOO MANY '}'

TOO MANY '{'

with the obvious interpretation.
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