public static BigInteger GetDay24Part2Answer()
{
// Starting with your scan, how many bugs are present after 200
// minutes?
// Answer: 2065
var mapDefinition = GetDay24Input();
var currentState = ErisMapState.CreateMap(mapDefinition, true);
currentState.DrawMapState();
var statesVisited = new HashSet <ErisMapState>()
{
currentState
};
Console.WriteLine("Start");
for (int loopCount = 0; loopCount < 200; loopCount++)
{
currentState = currentState.Evolve();
if (statesVisited.Contains(currentState))
{
break;
}
statesVisited.Add(currentState);
Console.Write($" ---> [Minutes: {loopCount + 1}, MinZ: {currentState.MinZ}, MaxZ: {currentState.MaxZ}]");
}
Console.WriteLine($"...after 200 minute(s):");
//currentState.DrawMapState();
var result = currentState.BugCells.Count;
return(result);
}
public static BigInteger GetDay24Part1Answer()
{
// What is the biodiversity rating for the first layout that
// appears twice?
// Answer: 10282017
var mapDefinition = GetDay24Input();
var currentState = ErisMapState.CreateMap(mapDefinition, false);
currentState.DrawMapState();
var statesVisited = new HashSet <ErisMapState>()
{
currentState
};
int loopCount = 0;
while (true)
{
loopCount++;
currentState = currentState.Evolve();
if (statesVisited.Contains(currentState))
{
break;
}
statesVisited.Add(currentState);
}
Console.WriteLine($"...after {loopCount} minute(s):");
currentState.DrawMapState();
var result = currentState.GetBiodiversityRating(0);
return(result);
}
public static BigInteger GetDay24Part2AnswerTest()
{
var mapDefinition = new string[]
{ "....#",
"#..#.",
"#.?##",
"..#..",
"#....", };
var map = ErisMapState.CreateMap(mapDefinition, true);
map.DrawMapState();
Console.WriteLine("Start");
for (int i = 0; i < 10; i++)
{
map = map.Evolve();
Console.Write($" ---> [Minutes: {i + 1}, MinZ: {map.MinZ}, MaxZ: {map.MaxZ}]");
}
Console.WriteLine($"...after 10 minute(s):");
map.DrawMapState();
var result = map.BugCells.Count;
return(result);
}
public static ErisMapState CreateMap(
IList <string> mapDefinition,
bool isRecursive)
{
int height = mapDefinition.Count;
int width = mapDefinition.Max(row => row.Length);
var bugCells = new HashSet <GridPoint3D>();
for (int y = 0; y < mapDefinition.Count; y++)
{
var rowDefinition = mapDefinition[y];
for (int x = 0; x < rowDefinition.Length; x++)
{
var cellDefinition = rowDefinition[x];
var point = new GridPoint3D(x, y, 0);
CellType cellType = cellDefinition switch
{
'.' => CellType.Empty,
'#' => CellType.Bug,
_ => CellType.Empty,
};
if (CellType.Bug.Equals(cellType))
{
bugCells.Add(point);
}
}
}
var result = new ErisMapState(
bugCells: bugCells,
width: width,
height: height,
minZ: 0,
maxZ: 0,
isRecursive: isRecursive);
return(result);
}
