Problem 08

src/main/scala/ninetyNineScalaProblems/Problem08.scala

@@ -0,0 +1,17 @@
+package ninetyNineScalaProblems
+
+import scala.annotation.tailrec
+
+object Problem08:
+    def eliminateConsecutiveDuplicates(list: List[Any]): List[Any] =
+        @tailrec
+        def loop(cursor: List[Any], acc: List[Any]): List[Any] =
+            cursor match
+                case e1 :: e2 :: tail if e1 == e2 =>
+                    loop(tail, e1 :: acc)
+                case e :: tail =>
+                    loop(tail, e :: acc)
+                case Nil =>
+                    acc
+
+        loop(list, List()).reverse

src/test/scala/ninetyNineScalaProblems/Problem08Suite.scala

@@ -0,0 +1,15 @@
+package ninetyNineScalaProblems
+
+class Problem08Suite extends munit.FunSuite:
+    List(
+        (List(1, 2, 3, 4), List(1, 2, 3, 4)),
+        (List(1, 2, 2, 3),  List(1, 2, 3)),
+        (List(1, 2, 3, 2),  List(1, 2, 3, 2)),
+        (List(1, 2, 3, 3),  List(1, 2, 3)),
+        (List(1, 1),  List(1)),
+        (List(), List()),
+        (List(1), List(1)),
+    ).foreach:
+        case (list, expected) =>
+            test(s"eliminateConsecutiveDuplicates returns [$expected]"):
+                assertEquals(Problem08.eliminateConsecutiveDuplicates(list), expected)