public static IntcodeProgramResult Init()
{
IntcodeProgramResult i = new IntcodeProgramResult();
i.position0 = 0;
i.outputs = new List <int>();
return(i);
}
public IntcodeProgramResult ExecuteIntcode(List <int> inputs)
{
IntcodeProgramResult result = IntcodeProgramResult.Init();
int instructionPointer = 0;
int[] instructions = new int[this.instructions.Length];
this.instructions.CopyTo(instructions, 0);
while (true)
{
string s = instructions[instructionPointer].ToString();
int DE = 0;
int C = 0;
int B = 0;
int A = 0;
switch (s.Length)
{
case 1:
DE = int.Parse(s);
break;
case 2:
DE = int.Parse(s);
break;
case 3:
DE = int.Parse(s.Substring(1, 2));
C = int.Parse(s.Substring(0, 1));
break;
case 4:
DE = int.Parse(s.Substring(2, 2));
C = int.Parse(s.Substring(1, 1));
B = int.Parse(s.Substring(0, 1));
break;
case 5:
DE = int.Parse(s.Substring(3, 2));
C = int.Parse(s.Substring(2, 1));
B = int.Parse(s.Substring(1, 1));
A = int.Parse(s.Substring(0, 1));
break;
}
int instructionPointerSteps = 0;
switch (DE)
{
case 1:
int valueA = C == 0 ? instructions[instructions[instructionPointer + 1]] : instructions[instructionPointer + 1];
int valueB = B == 0 ? instructions[instructions[instructionPointer + 2]] : instructions[instructionPointer + 2];
instructions[instructions[instructionPointer + 3]] = valueA + valueB;
instructionPointerSteps = 4;
break;
case 2:
valueA = C == 0 ? instructions[instructions[instructionPointer + 1]] : instructions[instructionPointer + 1];
valueB = B == 0 ? instructions[instructions[instructionPointer + 2]] : instructions[instructionPointer + 2];
instructions[instructions[instructionPointer + 3]] = valueA * valueB;
instructionPointerSteps = 4;
break;
case 3:
Console.WriteLine("in");
int index = C == 0 ? instructions[instructionPointer + 1] : instructionPointer + 1;
instructions[index] = inputs.First();
inputs.Remove(inputs.First());
instructionPointerSteps = 2;
break;
case 4:
index = C == 0 ? instructions[instructionPointer + 1] : instructionPointer + 1;
result.outputs.Add(instructions[index]);
instructionPointerSteps = 2;
break;
case 5:
valueA = C == 0 ? instructions[instructions[instructionPointer + 1]] : instructions[instructionPointer + 1];
valueB = B == 0 ? instructions[instructions[instructionPointer + 2]] : instructions[instructionPointer + 2];
if (valueA != 0)
{
instructionPointer = valueB;
}
else
{
instructionPointerSteps = 3;
}
break;
case 6:
valueA = C == 0 ? instructions[instructions[instructionPointer + 1]] : instructions[instructionPointer + 1];
valueB = B == 0 ? instructions[instructions[instructionPointer + 2]] : instructions[instructionPointer + 2];
if (valueA == 0)
{
instructionPointer = valueB;
}
else
{
instructionPointerSteps = 3;
}
break;
case 7:
valueA = C == 0 ? instructions[instructions[instructionPointer + 1]] : instructions[instructionPointer + 1];
valueB = B == 0 ? instructions[instructions[instructionPointer + 2]] : instructions[instructionPointer + 2];
instructions[instructions[instructionPointer + 3]] = (valueA < valueB) ? 1 : 0;
instructionPointerSteps = 4;
break;
case 8:
valueA = C == 0 ? instructions[instructions[instructionPointer + 1]] : instructions[instructionPointer + 1];
valueB = B == 0 ? instructions[instructions[instructionPointer + 2]] : instructions[instructionPointer + 2];
instructions[instructions[instructionPointer + 3]] = (valueA == valueB) ? 1 : 0;
instructionPointerSteps = 4;
break;
case 99:
result.position0 = instructions[0];
return(result);
}
instructionPointer += instructionPointerSteps;
}
}
