private void ProcessInstruction(InstructionModel instruction)
{
if (instruction.Completed)
{
return;
}
InstructionModel nextInstruction;
switch (instruction.Instruction)
{
case "acc":
_answer += instruction.Direction == "+" ? instruction.Value : -instruction.Value;
nextInstruction = _data.First(a => a.Index == instruction.Index + 1);
break;
case "jmp":
var nextIndex = instruction.Index + (instruction.Direction == "+" ? instruction.Value : -instruction.Value);
nextInstruction = _data.First(a => a.Index == nextIndex);
break;
case "nop":
nextInstruction = _data.First(a => a.Index == instruction.Index + 1);
break;
default:
throw new InvalidDataException("Invalid data at index " + instruction.Index);
}
instruction.Completed = true;
ProcessInstruction(nextInstruction);
}
private void SwitchInstruction(InstructionModel instruction)
{
if (instruction.Instruction == "jmp")
{
instruction.Instruction = "nop";
}
else if (instruction.Instruction == "nop")
{
instruction.Instruction = "jmp";
}
}
public static List <InstructionModel> GetData()
{
var result = new List <InstructionModel>();
using (var sr = new StreamReader("./DayEight/input.txt"))
{
string line;
var index = 0;
while ((line = sr.ReadLine()) != null)
{
var instruction = new InstructionModel();
instruction.Index = index;
instruction.Instruction = line.Substring(0, 3);
instruction.Direction = line.Substring(4, 1);
instruction.Value = int.Parse(line.Substring(5));
index++;
result.Add(instruction);
}
}
return(result);
}
