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    Turing Machine for even palindromes

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    Construct a turing machine that accepts the language {ww^R : w <- {a,b}+}, where w^R denotes w superscripted R - reverse of w. For example, if

    w = abb


    w^R = bba
    ww^R = abbbba

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    Solution Preview

    Notations used for denoting a turing machine transition are as follows.

    (StartState, SymbolRead) --> (EndState, SymbolWritten, MovementDirection)

    * Movement Directions are denoted by R (right) and L (left).
    * E is used to denote NULL symbol (or absense of symbol in a tape cell).
    * $ denotes a marker symbol.

    * You can construct ...

    Solution Summary

    Solution gives a transition list for the given turing machine, using which you can easily construct a graphical representation of it.