implement a turing machine as a class in matlab

main.m
classdef turingMachine
    properties
        tape % tape of the turing machine
        tapeIndex % current index of the tape
        state % current state of the turing machine
        transitionFunction % transition function of the turing machine
        acceptStates % set of accept states for the turing machine
        rejectStates % set of reject states for the turing machine
    end
    
    methods
        function obj = turingMachine(tape, initialState, transitionFunction, acceptStates, rejectStates)
            % constructor
            obj.tape = tape;
            obj.tapeIndex = 1;
            obj.state = initialState;
            obj.transitionFunction = transitionFunction;
            obj.acceptStates = acceptStates;
            obj.rejectStates = rejectStates;
        end
        
        function run(obj)
            % runs the turing machine
            while true
                % check if current state is an accept or reject state
                if any(ismember(obj.state, obj.acceptStates))
                    fprintf('Turing machine accepted the input.\n');
                    break
                elseif any(ismember(obj.state, obj.rejectStates))
                    fprintf('Turing machine rejected the input.\n');
                    break
                end
                
                % get current symbol and transition rules
                currentSymbol = obj.tape(obj.tapeIndex);
                transitionRule = obj.transitionFunction(obj.state, currentSymbol);
                newSymbol = transitionRule(1);
                direction = transitionRule(2);
                newState = transitionRule(3);
                
                % update tape
                obj.tape(obj.tapeIndex) = newSymbol;
                
                % move tape head
                if direction == 'R'
                    obj.tapeIndex = obj.tapeIndex + 1;
                elseif direction == 'L'
                    obj.tapeIndex = obj.tapeIndex - 1;
                end
                
                % update current state
                obj.state = newState;
            end
        end
    end
end
2145 chars
57 lines