public string PartTwo()
{
// go through all instructions trying to change "nop" to "jmp" and vice versa until boot runner terminates properly.
for (var i = 0; i < input.Length; i++)
{
var instruction = input[i].Split()[0];
if (instruction == "acc")
{
continue;
}
var argument = input[i].Split()[1];
if (instruction == "nop")
{
input[i] = "jmp " + argument;
}
else if (instruction == "jmp")
{
input[i] = "nop " + argument;
}
var runner = new BootCodeRunner(input);
if (runner.Run()) // terminated successfully
{
return(runner.Accumulator.ToString());
}
input[i] = instruction + " " + argument; // put original instruction back
}
throw new InvalidDataException();
}
public string PartOne()
{
var runner = new BootCodeRunner(input);
runner.Run();
return(runner.Accumulator.ToString());
}