feat: add function to retrieve top N songs by weeks on chart

src/main/scala/TopSongs/TopSongs.scala

@@ -113,6 +113,12 @@ case class TopSongs(songs: List[Song] = List()) {
       .toMap
   }
 
+  // This function returns the top N songs by weeks on chart
+  // It sorts the songs by the streak value in descending order and takes the top N songs
+  def topNSongsByWeeks(songs: List[Song], n: Int): List[Song] = {
+    songs.sortBy(song => -song.rank._1.streak.getOrElse(0)).take(n)
+  }
+
 }
 
 @main def main(): Unit =
@@ -159,3 +165,16 @@ case class TopSongs(songs: List[Song] = List()) {
     case (artist, count) => println(s"$artist: $count")
   }
 
+  println("----------");
+
+  // print the top N songs by weeks on chart
+  val topNSongs = topSongs.topNSongsByWeeks(topSongs.songs, 5)
+  println("Top N songs by weeks on chart:")
+  topNSongs.foreach { song =>
+    println(s"${song.title} by ${song.singer.map(_.person.name).mkString(", ")} - ${song.rank._1.streak.getOrElse(0)} weeks")
+  }
+
+
+
+
+