public string Part2(string[] input)
{
var phases = new[] { 5, 6, 7, 8, 9 }.Permutations().ToArray();
var program = IntCodeComputerExtensions.CreateProgram(null, input[0]);
var computers = Enumerable.Range(0, 5)
.Select(i =>
{
var result = new IntCodeComputer();
result.Initialize(program);
return(result);
})
.ToArray();
var maxThrusterSignal = long.MinValue;
foreach (var phaseDistribution in phases)
{
for (var i = 0; i < 5; i++)
{
var computerIndex = i;
var computer = computers[computerIndex];
computer.Initialize(program);
computer.Input.Enqueue(phaseDistribution[i]);
computer.Output += (_, l) =>
{
var nextComputer = computers[(computerIndex + 1) % 5];
nextComputer.Input.Enqueue(l);
nextComputer.ExecuteProgram();
};
}
computers[0].Input.Enqueue(0);
computers[0].ExecuteProgram();
var thrusterSignal = computers[^ 1].Outputs.Last();
public string Part1(string[] input)
{
var phases = new[] { 0, 1, 2, 3, 4 }.Permutations().ToArray();
var program = IntCodeComputerExtensions.CreateProgram(null, input[0]);
var computers = Enumerable.Range(0, 5).Select(i =>
{
var result = new IntCodeComputer();
result.Initialize(program);
return(result);
}).ToArray();
var maxThrusterSignal = long.MinValue;
foreach (var phaseDistribution in phases)
{
var previousOutput = 0L;
for (var i = 0; i < 5; i++)
{
var computer = computers[i];
computer.Initialize(program);
computer.Input.Enqueue(phaseDistribution[i]);
computer.Input.Enqueue(previousOutput);
computer.Output += (_, l) => previousOutput = l;
computer.ExecuteProgram();
}
var thrusterSignal = previousOutput;
if (thrusterSignal > maxThrusterSignal)
{
maxThrusterSignal = thrusterSignal;
}
}
return(maxThrusterSignal.ToString());
}