Problem 05

src/main/scala/ninetyNineScalaProblems/Problem05.scala

@@ -0,0 +1,19 @@
+package ninetyNineScalaProblems
+
+import scala.annotation.tailrec
+
+object Problem05:
+    def reverseList(list: List[Any]): List[Any] =
+        @tailrec
+        def loop(cursor: List[Any], acc: List[Any]): List[Any] =
+            cursor match
+                case head :: tail =>
+                    loop(tail, head :: acc)
+                case Nil =>
+                    acc
+
+        loop(list, List())
+
+object Problem05Stdlib:
+    def reverseList(list: List[Any]): List[Any] =
+        list.reverse

src/test/scala/ninetyNineScalaProblems/Problem05Suite.scala

@@ -0,0 +1,13 @@
+package ninetyNineScalaProblems
+
+class Problem05Suite extends munit.FunSuite:
+    List(
+        (List(1, 2, 3, 4, 5), List(5, 4, 3, 2, 1)),
+        (List(1), List(1)),
+        (List(), List()),
+        (List(0, 0, 0), List(0, 0, 0))
+    ).foreach:
+        case (list, expected) =>
+            test(s"reverseList returns [$expected]"):
+                assertEquals(Problem05.reverseList(list), expected)
+                assertEquals(Problem05Stdlib.reverseList(list), expected)