Problem 23

src/main/scala/ninetyNineScalaProblems/Problem23.scala

@@ -0,0 +1,7 @@
+package ninetyNineScalaProblems
+
+import scala.util.Random
+
+object Problem23:
+    def randomSelect(n: Int, list: List[Any]): List[Any] =
+        Problem18.slice(0, n, Random.shuffle(list))

src/test/scala/ninetyNineScalaProblems/Problem23Suite.scala

@@ -0,0 +1,13 @@
+package ninetyNineScalaProblems
+
+class Problem23Suite extends munit.FunSuite:
+    List(
+        ((1, List(1)), 1),
+        ((0, List()), 0),
+        ((0, List(1)), 0),
+        ((0, List(1, 2, 3, 4, 5)), 0),
+        ((3, List(1, 2, 3, 4, 5)), 3),
+    ).foreach:
+        case ((n, list), expectedLength) =>
+            test(s"randomSelect returns [$expectedLength]"):
+                assertEquals(Problem23.randomSelect(n, list).length, expectedLength)