From 6504948100ad6cf2c7c5b752f4db3b1cb480d8e6 Mon Sep 17 00:00:00 2001
From: Jakob Scheid <jakob.scheid@icloud.com>
Date: Thu, 19 Mar 2026 15:39:09 +0100
Subject: [PATCH] Problem 03

---
 .../ninetyNineScalaProblems/Problem03.scala   | 21 +++++++++++++++++++
 .../Problem03Suite.scala                      | 13 ++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 src/main/scala/ninetyNineScalaProblems/Problem03.scala
 create mode 100644 src/test/scala/ninetyNineScalaProblems/Problem03Suite.scala

diff --git a/src/main/scala/ninetyNineScalaProblems/Problem03.scala b/src/main/scala/ninetyNineScalaProblems/Problem03.scala
new file mode 100644
index 0000000..59f671c
--- /dev/null
+++ b/src/main/scala/ninetyNineScalaProblems/Problem03.scala
@@ -0,0 +1,21 @@
+package ninetyNineScalaProblems
+
+import scala.annotation.tailrec
+
+object Problem03:
+    def nthElement(list: List[Any], n: Int): Option[Any] =
+        @tailrec
+        def loop(cursor: List[Any], acc: Int): Option[Any] =
+            cursor match
+                case e :: tail if acc == n =>
+                    Some(e)
+                case e :: tail =>
+                    loop(tail, acc + 1)
+                case Nil =>
+                    None
+
+        loop(list, 0)
+
+object Problem03Stdlib:
+    def nthElement(list: List[Any], n: Int): Option[Any] =
+        list.drop(n).headOption
\ No newline at end of file
diff --git a/src/test/scala/ninetyNineScalaProblems/Problem03Suite.scala b/src/test/scala/ninetyNineScalaProblems/Problem03Suite.scala
new file mode 100644
index 0000000..08aaa54
--- /dev/null
+++ b/src/test/scala/ninetyNineScalaProblems/Problem03Suite.scala
@@ -0,0 +1,13 @@
+package ninetyNineScalaProblems
+
+class Problem03Suite extends munit.FunSuite:
+    List(
+        ((List(1, 2, 3, 4, 5), 0), Some(1)),
+        ((List(1, 2, 3, 4, 5), 2), Some(3)),
+        ((List(1), 1), None),
+        ((List(), 0), None)
+    ).foreach:
+        case ((list, n), expected) => 
+            test(s"nthElement returns [$expected]"):
+                assertEquals(Problem03.nthElement(list, n), expected)
+                assertEquals(Problem03Stdlib.nthElement(list, n), expected)
\ No newline at end of file