2022 Day 15, part 1 complete

Going home from C&C

helpers/helpers.go

@@ -416,3 +416,7 @@ func Sum(l, h int) int {
 	}
 	return ret
 }
+
+func ManhattanDistance(x1, y1, x2, y2 int) int {
+	return AbsInt(x1-x2) + AbsInt(y1-y2)
+}