Problem 01

src/main/scala/ninetyNineScalaProblems/Problem01.scala

@@ -0,0 +1,13 @@
+package ninetyNineScalaProblems
+
+object Problem01:
+    def lastElement(list: List[Any]): Option[Any] = 
+        list match
+            case Nil => None
+            case _ => Some(list(list.length - 1))
+
+object Problem01Stdlib:
+    def lastElement(list: List[Any]): Option[Any] =
+        list match
+            case Nil => None
+            case _ => Some(list.last)

src/test/scala/ninetyNineScalaProblems/Problem01Suite.scala

@@ -0,0 +1,12 @@
+package ninetyNineScalaProblems
+
+class Problem01Suite extends munit.FunSuite:
+    List(
+        (List(1, 2, 3, 4, 5), Some(5)),
+        (List(1), Some(1)),
+        (List(), None)
+    ).foreach:
+            case (list, expected) =>
+                test(s"lastElement returns [$expected]"):
+                    assertEquals(Problem01.lastElement(list), expected, "Problem01")
+                    assertEquals(Problem01Stdlib.lastElement(list), expected, "Problem01Stdlib")