[Ch10c] Original Streams Jukebox code from Bert

package ch10c;// JukeboxV3 - mock i/o and "played least"

import java.util.*;

import java.util.stream.*;

import java.util.function.*;

public class JukeboxV3 {

  ArrayList<SongV3> songList = new ArrayList<>();  // songs in the jukebox

  ArrayList<Log> logList = new ArrayList<>();      // log of songs played

  public static void main(String[] args) {

    new JukeboxV3().go();

  }

  public void go() {  // list songs in least played order

    songList = new SongV3().getSongsV3();  // mock I/O

    logList = new Log().getLog();

    // solution using forEach

    ArrayList<Result> tempList = new ArrayList<>();  

    for(SongV3 s: songList)

      tempList.add(new Result(s.id, 0));    // temporary list of songs with count = 0

    for(Log l: logList)                     // traverse log to get counts

      for(Result r: tempList)               // i know, add curlies  ;)

        if(l.id == r.id)

          ++r.count;

    Collections.sort(tempList,

      (s1, s2) -> s1.getCount().compareTo(s2.getCount()));  // sort by count, ascending

    System.out.println("\n\n" + tempList);

    // end of forEach solution

  }

}

// resulting collection

class Result {

  int id;

  Integer count;         // ugly, so we can sort on it

  Result(int i, int c) {

    id = i;

    count = c;

  }

  Integer getCount() {

    return count;

  }

  public String toString() {

    return(id + " " + count);

  }

}

// SongV3 class

class SongV3 {

  int id;

  String title;

  String band;

  String genre;

  int year;

  String gender;

  SongV3() { }

  SongV3(int id, String t, String b, String g, int y, String fm) {

    this.id = id;

    title = t;

    band = b;

    genre = g;

    year = y;

    gender = fm;

  }

  public ArrayList<SongV3> getSongsV3() {

    ArrayList<SongV3> mySongs = new ArrayList<>();

    mySongs.add(new SongV3(1, "Cassidy", "Grateful Dead", "Rock", 1972, "m"));

    mySongs.add(new SongV3(2, "Crazy Diamond", "Pink Floyd", "Rock", 1975, "m"));

    mySongs.add(new SongV3(3, "Rosen Im Asphalt", "Schnauss", "Electronic", 2017, "i"));

    mySongs.add(new SongV3(4, "Havana", "Cabillo", "R&B", 2017, "f"));

    mySongs.add(new SongV3(5, "Take Five", "Brubeck", "Jazz", 1959, "i"));

    mySongs.add(new SongV3(6, "Jumpin' Jack Flash", "Stones", "rock", 1964, "m"));

    mySongs.add(new SongV3(7, "Silence", "Delerium", "Trance", 1999, "f"));

    mySongs.add(new SongV3(8, "Lochs of Dread", "Strength in Numbers", "Newgrass", 1989, "i"));

    mySongs.add(new SongV3(9, "No Woman No Cry", "Marley", "Reggae", 1974, "m"));

    mySongs.add(new SongV3(10, "If I Ain't Got You", "Keys", "R&B", 2003, "f"));

    mySongs.add(new SongV3(11, "Don't Know Why", "Jones", "Jazz", 2002, "f"));

    mySongs.add(new SongV3(12, "Smooth", "Santana", "Rock", 1999, "m"));

    mySongs.add(new SongV3(13, "Come Together", "Beatles", "Rock", 1969, "m"));

    mySongs.add(new SongV3(14, "Love on a Real Train", "Tangerine Dream", "Electronic", 1984, "i"));

    mySongs.add(new SongV3(15, "Smoothie Song, Live", "Nickel Creek", "Newgrass", 2021, "i"));

    mySongs.add(new SongV3(16, "Switch Up", "Protoje", "Reggae", 2020, "m"));

    mySongs.add(new SongV3(17, "Stomp and Buck Dance", "Crusaders", "Jazz", 1974, "i"));

    mySongs.add(new SongV3(18, "Nature's Kingdom", "Delerium", "Trance", 2000, "f"));

    mySongs.add(new SongV3(19, "Eyes of the World", "Grateful Dead", "Rock", 1973, "m"));

    mySongs.add(new SongV3(20, "Midnight Train to Georgia", "Knight", "R&B", 1976, "f"));

    mySongs.add(new SongV3(21, "Black Clouds", "String Cheese", "Newgrass", 1997, "m"));

    mySongs.add(new SongV3(22, "What's Going On", "Gaye", "R&B", 1971, "m"));

    return mySongs;

  }

  public int getId() {

    return id;

  }

  public String getTitle() {

    return title;

  }

  public String getBand() {

    return band;

  }

  public String getGenre() {

    return genre;

  }

  public int getYear() {

    return year;

  }

  public String getGender() {

    return gender;

  }

  public String toString() {

    return(id + ": " + title + ", " + band + ", " + genre + ", " + year + ", " + gender + "\n");

  }

}

// Log (songs played) class

class Log {

  int id;

  String date;

  Log(int i, String d) {

    id = i;

    date = d;

  }

  Log() { }

  public int getId() {

    return id;

  }

  public String toString() {

    return("" + id);

  }

  public ArrayList<Log> getLog() {

    ArrayList<Log> myLog = new ArrayList<>();

    myLog.add(new Log(1, "june 1"));

    myLog.add(new Log(8, "june 1"));

    myLog.add(new Log(9, "june 1"));

    myLog.add(new Log(18, "june 1"));

    myLog.add(new Log(15, "june 1"));

    myLog.add(new Log(13, "june 1"));

    myLog.add(new Log(2, "june 1"));

    myLog.add(new Log(5, "june 1"));

    myLog.add(new Log(11, "june 1"));

    myLog.add(new Log(4, "june 1"));

    myLog.add(new Log(2, "june 1"));

    myLog.add(new Log(8, "june 1"));

    myLog.add(new Log(15, "june 1"));

    myLog.add(new Log(6, "june 1"));

    myLog.add(new Log(7, "june 1"));

    myLog.add(new Log(1, "june 1"));

    myLog.add(new Log(11, "june 1"));

    myLog.add(new Log(4, "june 1"));

    myLog.add(new Log(12, "june 1"));

    myLog.add(new Log(21, "june 1"));

    myLog.add(new Log(20, "june 1"));

    myLog.add(new Log(14, "june 1"));

    myLog.add(new Log(6, "june 1"));

    myLog.add(new Log(4, "june 1"));

    myLog.add(new Log(17, "june 1"));

    myLog.add(new Log(18, "june 1"));

    myLog.add(new Log(19, "june 1"));

    myLog.add(new Log(21, "june 1"));

    myLog.add(new Log(5, "june 1"));

    myLog.add(new Log(9, "june 1"));

    myLog.add(new Log(12, "june 1"));

    myLog.add(new Log(10, "june 1"));

    return myLog;

  }

}