Add Day 12 Part 1

Day12/Program.cs

@@ -65,27 +65,6 @@ int Part1(char[,] grid, int[][] directions)
     return regions.Sum(region => Perimeter(region, neighbourDictionary) * region.Count);
 }
 
-int CountSplitSegments(List<(int, int, int, string)> lines)
-{
-    if (lines.Count == 0) return 0;
-
-    var segmentCount = 1;
-    for (var i = 1; i < lines.Count; i++)
-    {
-        var prev = lines[i - 1];
-        var curr = lines[i];
-
-        var isContiguous = 
-            (prev.Item1 == curr.Item1 && curr.Item2 - prev.Item2 == 1 && curr.Item3 == prev.Item3);
-
-        if (!isContiguous)
-        {
-            segmentCount++;
-        }
-    }
-    return segmentCount;
-}
-
 HashSet<(int, int)> GetRegion((int, int) point, Dictionary<(int, int), HashSet<(int, int)>> neighbourDict)
 {
     var region = new HashSet<(int, int)>();