private static RegisterSample ParseRegisterUpdateResult(string registerUpdateResultInput)
{
IEnumerable <int> ParseRegisterValues(string value, string prefix) => value
.TrimStart(prefix)
.Trim(' ', '[', ']')
.Split(',')
.Select(i => int.Parse(i.Trim()));
var inputs = registerUpdateResultInput.Split(Environment.NewLine);
var initialValues = new RegisterValues(ParseRegisterValues(inputs.First(), "Before:"));
var updateCommand = ParseUpdateRegisterCommand(inputs[1]);
var updatedValues = new RegisterValues(ParseRegisterValues(inputs.Last(), "After:"));
return(new RegisterSample(initialValues, updateCommand, updatedValues));
}
public static void SolvePartTwo()
{
var registerResults = GetSamplesInput();
var instructions = GetTestInput();
var opcodeNumbers = FindOpcodeNumbersMeaning(registerResults);
var register = new RegisterValues(0, 0, 0, 0);
foreach (var instruction in instructions)
{
opcodeNumbers[instruction.OpcodeNumber].UpdateRegisters(register, instruction.Instruction);
}
register[0].WriteLine("Day 16, Part 2: ");
}
public bool AreValuesEqual(RegisterValues other) => Values.SequenceEqual(other.Values);
public void UpdateRegisters(RegisterValues registerValues, RegisterInstruction updateCommand)
{
var newRegisterValue = calculateNewRegisterValue(registerValues.Values, updateCommand);
registerValues.UpdateValue(updateCommand.OutputToRegister, newRegisterValue);
}
