// == == == == == Puzzle 2 == == == == ==
public static string Puzzle2(string input)
{
var outCh = Channel.CreateUnbounded <long>();
var ampA = new Intcode.Interpreter(input, inputChannel: outCh);
var ampB = new Intcode.Interpreter(input, inputChannel: ampA.OutputChannel);
var ampC = new Intcode.Interpreter(input, inputChannel: ampB.OutputChannel);
var ampD = new Intcode.Interpreter(input, inputChannel: ampC.OutputChannel);
var ampE = new Intcode.Interpreter(input, inputChannel: ampD.OutputChannel, outputChannel: outCh);
long highestSignal = 0;
foreach (var phaseSettings in phasePermutationsHigh)
{
// Reset and start all amps with new phase input
var tasks = new Task[5]
{
ampA.ExecuteProgram_StartAsync(phaseSettings.ElementAt(0)),
ampB.ExecuteProgram_StartAsync(phaseSettings.ElementAt(1)),
ampC.ExecuteProgram_StartAsync(phaseSettings.ElementAt(2)),
ampD.ExecuteProgram_StartAsync(phaseSettings.ElementAt(3)),
ampE.ExecuteProgram_StartAsync(phaseSettings.ElementAt(4)),
};
// Start feedbackloop
ampA.SetInput(0);
//Wait for all tasks to reach halt
Task.WaitAll(tasks);
// Check if result is largest
var result = ampE.GetOutput();
if (result > highestSignal)
{
highestSignal = result;
}
}
return(highestSignal.ToString());
}
