NO ARRAYLISTS, just need help with the bolded methods language is JAVA

public ScoreBoard(int gameCount){

//Constructor

// set the game count and initialize the records to be an empty list

if (gameCount <= 0) {

throw new IllegalArgumentException("Must have at least one game!");

}

this.gameCount = gameCount;

// - Throw IllegalArgumentException if gameCount is not positive

// - Use this _exact_ error message for the exception

// (quotes are not part of the message):

// "Must have at least one game!"

}

public int playerCount(){

//report number of players

//O(1)

return records.size(); //default return, remove or update as needed

}

public int gameCount(){

//report number of games

//O(1)

return gameCount; //default return, remove or update as needed

}

public void addPlayer(PlayerRec player){

// append new player into record

// if player is already present, updated the record

// - assume each player has a unique name, i.e. matching names means same player

// O(N) where N is the number of players present

}

public PlayerRec getPlayer(int index){

//return player record corresponding to index

//return null for invalid indexes

if (index < 0 || index >= records.size()) {

return null;

}

return records.get(index);

//O(1)

//default return, remove or update as needed

}

public PlayerRec findPlayer(String name){

//find and return player record with the matching name

//return null if not present

return null;

// O(N) where N is the number of players present

//default return, remove or update as needed

}

public boolean removePlayer(String name){

//remove player with the matching name

//return true if a record is removed successfully; false otherwise

// O(N) where N is the number of players present

return false; //default return, remove or update as needed

}

public boolean changeScore(String name, int game, int newScore){

//set the score of the given game for the player with a matching name

//return false if newScore cannot be set for any reason

// (e.g player /game not present); return true otherwise

// O(N) where N is the number of players present

return false; //default return, remove or update as needed

}

public int topTotalScore(){

//return largest total score among all players

// return -1 if no player present

// O(N) where N is the number of players present

return -3; //default return, remove or update as needed

}

public ThreeTenDynArray topPlayers(){

//return the list of players (names only) with the top total score

// if no player present, return an empty list

// if there are multiple players, keep the names in the same order as

// the players in the current record

// O(N) where N is the number of players present

// _if_ appending to the list to return is O(1)

return null; //default return, remove or update as needed

}

public ThreeTenDynArray getGame(int game){

// return all scores for the given game index as a list

// - if multiple players are present, keep scores in the same order as

// order of players in records

// - return an empty list if no players present or game index is invalid

// O(M) where M is the number of players

// _if_ appending to the list to return is O(1)

return null; //default return, remove or update as needed

}

public int getGameTotal(int game){

// return the sum of all players' scores of the given game

// - return -1 if no players present or game index is invalid

// O(M) where M is the number of players

return -10; //default return, remove or update as needed

}

public int getGameMax(int game){

// return the max score of the given game

// - return -1 if no players present or game index is invalid

// O(M) where M is the number of players

return -10; //default return, remove or update as needed

}

public int getGameMin(int game){

// return the min score of the given game

// - return -1 if no players present or game index is invalid

// O(M) where M is the number of players

return -10; //default return, remove or update as needed

}

public boolean combine(ScoreBoard another, boolean append){

// add records from another scoreboard into the current one

// - if a player is already present, update the record

// - otherwise,

// -if append is false, records from another should be added

// to the start of the current records but keep their original order

// -if append is true, add new records to the end of the list

// Check main() below and description document for examples.

// return false if two score boards cannot be combined (game count mismatch etc.);

// return true otherwise

// Although we do not have a big-O requirement for this method, you should

// practice code reuse and utilize existing operations as much as possible.

return false; //default return, remove or update as needed

}