protected override string Solve2(IEnumerable <string> inputs)
{
var bodies = inputs.Select(x => new Body(x)).ToArray();
var simulation = new GravitySimulation(bodies);
var existingStates = new HashSet <string>[] { new HashSet <string>(), new HashSet <string>(), new HashSet <string>() };
var duplicateStateStep = new int[] { 0, 0, 0 };
do
{
simulation.Step();
for (var currentAxis = 0; currentAxis < 3; currentAxis++)
{
if (duplicateStateStep[currentAxis] == 0)
{
if (!existingStates[currentAxis].Add(simulation.StateOfAxis(currentAxis)))
{
duplicateStateStep[currentAxis] = existingStates[currentAxis].Count();
}
}
}
} while (duplicateStateStep.Any(x => x == 0));
var temp = LeastCommonMultiple(duplicateStateStep[0], duplicateStateStep[1]);
var cycleLength = LeastCommonMultiple(temp, duplicateStateStep[2]);
AssertExpectedResult("380635029877596", cycleLength.ToString());
return($"Cycles at {cycleLength}");
}
protected override string Solve(IEnumerable <string> inputs)
{
var bodies = inputs.Select(x => new Body(x)).ToArray();
var simulation = new GravitySimulation(bodies);
var energies = new List <float>(1000);
simulation.OnEachStep(sim => energies.Add(sim.Energy));
simulation.Step(1000);
logger.LogInformation(simulation.Print());
AssertExpectedResult("12351", energies.Last().ToString());
return(energies.Last().ToString());
}
