scala day1

.gitignore

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+.metals/
+.bloop/
+target/
+project/metals.sbt

scala/.scalafmt.conf

@@ -0,0 +1 @@
+version = "2.0.1"

scala/build.sbt

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+name := "scala"
+
+version := "0.1"
+
+scalaVersion := "2.13.1"
+
+libraryDependencies += "org.scalactic" %% "scalactic" % "3.0.8"
+libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.8" % "test"

scala/project/build.properties

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+sbt.version = 1.3.3

scala/src/main/scala/day1/TicTacToe.scala

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+package day1;
+
+object Move extends Enumeration {
+  type Move = Value
+  val X, O, ? = Value
+}
+
+object TicTacToe extends App{
+
+    println(winner(List(
+      Move.?, Move.?, Move.?,
+      Move.?, Move.?, Move.?,
+      Move.?, Move.?, Move.?,
+    )))
+
+    println(winner(List(
+      Move.X, Move.O, Move.O,
+      Move.O, Move.X, Move.O,
+      Move.?, Move.?, Move.O,
+    )))
+
+    println(winner(List(
+      Move.X, Move.X, Move.X,
+      Move.O, Move.X, Move.O,
+      Move.?, Move.?, Move.O,
+    )))
+
+    println(winner(List(
+      Move.?, Move.X, Move.X,
+      Move.O, Move.X, Move.O,
+      Move.?, Move.?, Move.O
+    )))
+
+
+def winner(board: List[Move.Move]): Move.Move = {
+  val a1 :: a2 :: a3 :: b1 :: b2 :: b3 :: c1 :: c2 :: c3 :: _ = board
+
+  List(
+    (a1, a2, a3),
+    (b1, b2, b3),
+    (c1, c2, c3),
+    (a1, b1, c1),
+    (a2, b2, c2),
+    (a3, b3, c3),
+    (a1, b2, c3),
+    (a3, b2, c1),
+  ).find((rule) => {
+    rule._1 == rule._2 && rule._1 == rule._3
+  }).map(_._1)
+    .getOrElse(Move.?)
+
+}
+
+winner(List(
+  Move.?, Move.?, Move.?,
+  Move.?, Move.?, Move.?,
+  Move.?, Move.?, Move.?,
+))
+
+winner(List(
+  Move.X, Move.O, Move.O,
+  Move.O, Move.X, Move.O,
+  Move.?, Move.?, Move.O,
+))
+
+winner(List(
+  Move.X, Move.X, Move.X,
+  Move.O, Move.X, Move.O,
+  Move.?, Move.?, Move.O,
+))
+
+winner(List(
+  Move.?, Move.X, Move.X,
+  Move.O, Move.X, Move.O,
+  Move.?, Move.?, Move.O
+))
+
+}