2018 Day10 Solved

smabuk · Nov 11, 2023 · de4f19d · de4f19d
1 parent 8094318
commit de4f19d
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Showing 2 changed files with 29 additions and 19 deletions.
diff --git a/Solutions/2018/Day10.cs b/Solutions/2018/Day10.cs
@@ -19,21 +19,11 @@ private static void LoadTheStars(string[] input) {
 		_pointsOfLight = input.Select(PointOfLight.Parse);
 	}
 
-	private static string Solution1(string[] _) {
+	private static string Solution1(string[] _)
+	{
 		List<PointOfLight> pointsOfLight = _pointsOfLight.ToList();
 
-		int letterHeight = pointsOfLight.Count < 35 ? 8 : 10;
-
-		int minY = int.MinValue;
-		int maxY = int.MaxValue;
-		do {
-			for (int i = 0; i < pointsOfLight.Count; i++) {
-				pointsOfLight[i] = pointsOfLight[i].Move();
-			}
-
-			minY = pointsOfLight.Min(p => p.Position.Y);
-			maxY = pointsOfLight.Max(p => p.Position.Y);
-		} while (maxY - minY > letterHeight);
+		int noOfSeconds = MoveTheStars(pointsOfLight, out int minY, out int maxY);
 
 		int minX = pointsOfLight.Min(p => p.Position.X);
 		int maxX = pointsOfLight.Max(p => p.Position.X);
@@ -53,9 +43,29 @@ private static string Solution1(string[] _) {
 		return message;
 	}
 
-	private static string Solution2(string[] input) {
-		List<PointOfLight> pointsOfLight = input.Select(ParseLine).ToList();
-		return "** Solution not written yet **";
+	private static int Solution2(string[] input)
+	{
+		List<PointOfLight> pointsOfLight = _pointsOfLight.ToList();
+		return MoveTheStars(pointsOfLight, out int _, out int _);
+	}
+
+	private static int MoveTheStars(List<PointOfLight> pointsOfLight, out int minY, out int maxY)
+	{
+		int letterHeight = pointsOfLight.Count < 35 ? 8 : 10;
+		int noOfSeconds = 0;
+		minY = int.MinValue;
+		maxY = int.MaxValue;
+		do {
+			for (int i = 0; i < pointsOfLight.Count; i++) {
+				pointsOfLight[i] = pointsOfLight[i].Move();
+			}
+
+			minY = pointsOfLight.Min(p => p.Position.Y);
+			maxY = pointsOfLight.Max(p => p.Position.Y);
+			noOfSeconds++;
+		} while (maxY - minY > letterHeight);
+
+		return noOfSeconds;
 	}
 
 	private record PointOfLight(Point Position, Point Velocity) : IParsable<PointOfLight> {

diff --git a/Tests/2018/Tests_10.cs b/Tests/2018/Tests_10.cs
@@ -88,10 +88,10 @@ public void Part1(string input, string expected)
 		position=< 5,  9> velocity=< 1, -2>
 		position=<14,  7> velocity=<-2,  0>
 		position=<-3,  6> velocity=< 2, -1>
-		""", "???")]
-	public void Part2(string input, string expected)
+		""", 3)]
+	public void Part2(string input, int expected)
 	{
-		string actual = SolutionRouter.SolveProblem(YEAR, DAY, PART2, input);
+		_ = int.TryParse(SolutionRouter.SolveProblem(YEAR, DAY, PART2, input), out int actual);
 		Assert.Equal(expected, actual);
 	}
 }