task 3

src/ch/hevs/isc/slopify_v2/Album.scala

@@ -8,5 +8,14 @@ class Album(val name: String) extends Serializable {
   def containsSong(song: Song): Boolean = _songs.contains(song)
   def getSongs(): Array[Song] = _songs.toArray
 
+  def getSongByTitle(title: String): Option[Song] = {
+    for (song: Song <- _songs) {
+      if (song.title == title) {
+        return Some(song)
+      }
+    }
+    return None
+  }
+
   override def toString: String = s"<Album '$name': ${_songs.length} song(s)>"
 }