public void TestDay7()
{
int[] input = { 1, 2, 3 };
var result = new List <int[]>();
Util.FindPermutations(input, result);
Assert.AreEqual(6, result.Count);
var day7 = new Day7("");
long lastOutputSignal = 0;
Assert.AreEqual(43210, day7.RunProgramThroughAmplifiers(new int[] { 4, 3, 2, 1, 0 }, 0, ref lastOutputSignal, "3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0"));
Assert.AreEqual(43210, day7.FindMaxSignal("3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0", new int[] { 4, 3, 2, 1, 0 }));
Assert.AreEqual(54321, day7.FindMaxSignal("3,23,3,24,1002,24,10,24,1002,23,-1,23,101,5,23,23,1,24,23,23,4,23,99,0,0", new int[] { 0, 1, 2, 3, 4 }));
Assert.AreEqual(65210, day7.FindMaxSignal("3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0", new int[] { 1, 0, 4, 3, 2 }));
//Max thruster signal 139629729 (from phase setting sequence 9,8,7,6,5):
//3,26,1001,26,-4,26,3,27,1002,27,2,27,1,27,26,
//27,4,27,1001,28,-1,28,1005,28,6,99,0,0,5
//Max thruster signal 18216 (from phase setting sequence 9,7,8,5,6):
//3,52,1001,52,-5,52,3,53,1,52,56,54,1007,54,5,55,1005,55,26,1001,54,
//-5,54,1105,1,12,1,53,54,53,1008,54,0,55,1001,55,1,55,2,53,55,53,4,
//53,1001,56,-1,56,1005,56,6,99,0,0,0,0,10
}