import java.util.ArrayList;

class Playlist {
  
  public static void main(String[] args) {
    ArrayList<String> desertIslandPlaylist = new ArrayList <String>();

    desertIslandPlaylist.add("Moon");
    desertIslandPlaylist.add("Let it All Workout");
    desertIslandPlaylist.add("Can't Get Close");
    desertIslandPlaylist.add("Lord I Need You");
    desertIslandPlaylist.add("Feel");
    desertIslandPlaylist.add("24 hours");
    desertIslandPlaylist.add("Bad News");
    desertIslandPlaylist.add("Pure Souls");
    desertIslandPlaylist.add("Come To Life");

     //System.out.println(desertIslandPlaylist);
    // System.out.println(desertIslandPlaylist.size());
     desertIslandPlaylist.remove("Bad News");
     desertIslandPlaylist.remove("Pure Souls");
     desertIslandPlaylist.remove("Feel");
     desertIslandPlaylist.remove("Lord I Need You");
     //System.out.println(desertIslandPlaylist.size());
//Get the indices of the songs you want to swap.
    int indexA = desertIslandPlaylist.indexOf("Let it All Workout");
    int indexB = desertIslandPlaylist.indexOf("Moon");
    //Create a temporary variable to store the value of song a. (We’ll call the songs a and b here.)
    String tempA = "Let it All Workout";
    //Rewrite the value at the index of a to the value of b.

    desertIslandPlaylist.set(indexA, "Moon");
    desertIslandPlaylist.set(indexB, "Let it All Workout");

    System.out.println(desertIslandPlaylist.size());
    System.out.println(desertIslandPlaylist);
  }
  
}