Adding day 18 p1 and 19 p1 + creating folder 2018

2018/day6/part2.scala

@@ -0,0 +1,34 @@
+import scala.io.StdIn.readLine
+
+case class Pos(x: Int, y: Int) {
+  def dist(other: Pos): Int = (other.x - x).abs + (other.y - y).abs
+}
+
+case class Coords(id: Int, p: Pos)
+
+case class CoordsWithDist(c: Coords, dist: Int)
+
+val MAX_X: Int = 400
+val MAX_Y: Int = 400
+
+val MAX_DIST_SUM: Int = 10000
+
+val coords: List[Coords] = Iterator
+  .continually(readLine)
+  .takeWhile(_ != null)
+  .map { s =>
+    val p = s.split(", ")
+    Pos(p(0).toInt, p(1).toInt)
+  }
+  .toList
+  .zipWithIndex
+  .map(x => Coords(x._2, x._1))
+
+val distSum = for {
+  x <- 0 to MAX_X
+  y <- 0 to MAX_Y
+  p = Pos(x, y)
+  c = coords.map(_.p.dist(p)).sum if c < MAX_DIST_SUM
+} yield (p, c)
+
+println(distSum.size)