Exemplo n.º 1
0
        public static void MutateToFindNormalExitAccumulator(string filename)
        {
            var program = LoadProgram(filename);

            int[] nopIndexes = FindJmpIndexes(program);

            int accumulator = 0;

            for (var i = 0; i < nopIndexes.Length && accumulator == 0; i++)
            {
                var nopIndex = nopIndexes[i];
                var saved    = program[nopIndex];
                program[nopIndex] = new SimpleInstruction
                {
                    Operator = SimpleProgram.Nop,
                };
                try
                {
                    accumulator = program.Run();
                }
                catch (InfiniteLoopException e)
                {
                    // Not this one
                }
                program[nopIndex] = saved;
            }

            Console.WriteLine($"Accumulator value on normal program exit is {accumulator}");
        }
Exemplo n.º 2
0
        private static SimpleProgram LoadProgram(string filename)
        {
            var lines = Utility.ReadLinesFromFile(filename);

            var program = new SimpleProgram();

            foreach (var line in lines)
            {
                var parts       = line.Split(" ");
                var instruction = new SimpleInstruction
                {
                    Operator = parts[0],
                    Operand  = Convert.ToInt32(parts[1])
                };

                program.Add(instruction);
            }

            return(program);
        }