public static void main(String[] args) {
        String[] players = {"Betty white", "My Grandma", "Zombie", "Drunk guy", "CIA agent", "Harry potter"};
        BingoPlayers game = new BingoPlayers(players);
        game.simulateGame();
    }
    
    static class BingoDrawer{ 
        LinkedList<Integer> drawer;
        BingoDrawer(){
            drawer = new LinkedList();
            for(int i=1; i<=75; i++)
                drawer.addLast(i);
        }
        
        int drawCard() {
            int cardIndex = (int)(Math.random()*(drawer.size()-1));
            int card = drawer.get(cardIndex);
            drawer.remove(cardIndex);
            return card;
        }
        
        boolean canDraw(){
            return drawer.size() > 0;
        }
    }
    
    static class BingoBoard {
        
        BingoBoard() {
            board = new int[5][5];
            cardLeftOpen = new HashSet();
            setUpBoard();
        }
        
        boolean playCard(int card) {
            if(!cardLeftOpen.contains(card)) {
                // card does not exist on you board
                return false;
            }
            
            for(int i = 0; i < board.length; i++) {
                for(int j = 0; j < board[0].length; j++) {
                    if(board[i][j] == card){
                        cardLeftOpen.remove(card);
                        board[i][j] = 0;
                        return checkIfWon(i,j);
                    }
                }
            }
            return false; 
        }
        
        void printBoard() {
            for(int i = 0; i < board.length; i++) {
                for(int j = 0; j < board[0].length; j++) {
                    System.out.print(board[i][j]+", ");
                }
                System.out.print("\n");
            }
            System.out.println("");
        }
        
        // private fuctions: 
        private int[][] board;
        private Set<Integer> cardLeftOpen;
        
        private void setUpBoard() {
            Set<Integer> takenCards = new HashSet();
            for(int i = 0; i < board.length; i++) {
                for(int j=0; j < board[0].length; j++) {
                    while( 0 == board[i][j]) {
                        int randCard = (int)(Math.random()*75+1);
                        if(!takenCards.contains(randCard)) {
                            board[i][j] = randCard;
                            takenCards.add(randCard);
                        }
                    }
                }
            }
           cardLeftOpen.addAll(takenCards);
        }
        
        private boolean checkIfWon(int i, int j) {   
            int count = 0;
            int index = 0;
            
            // check horizontal row
            while(index < board[i].length) {
                if(board[i][index++] == 0) count++;
            }
            if(count == board.length) return true;
            
            count = 0;
            index = 0;
            //check vertical
            while(index < board.length) {
                if(board[index++][j] == 0) count++;
            }
            if(count == board.length) return true;
            
            // check diagonals top left to bottom right
            int x = 0;
            int y = 0;
            count = 0;
            
            while(x < board.length && y < board[0].length) {
                if(board[x++][y++] == 0) count++;
            }
            
            if(count == board.length) return true;
            
            // check diagonals bottom left to top right
            x = board.length-1;
            y = 0;
            count = 0;
            
            while(x >=0 && y > board[0].length) {
                if(board[x--][y++] == 0) count++;
            }
            
            return count == board.length;
        }
    }
    
    static class BingoPlayers {
        private BingoDrawer drawer = new BingoDrawer();
        private Map<String, BingoBoard> bingoBoards;
        BingoPlayers(String[] players) {
            bingoBoards = new HashMap();
            for(String player : players)
                bingoBoards.put(player, new BingoBoard());
            
        }
        
        void simulateGame() {
            while(true) {
                
                if(!drawer.canDraw()) {
                        System.out.println("No one won the game");
                        return;
                }
                    
                int cardCalled = drawer.drawCard();
                for(Map.Entry<String, BingoBoard> entry : bingoBoards.entrySet()) {
                    // each plays their card and see if the won
                    if(entry.getValue().playCard(cardCalled)) {
                        System.out.println(entry.getKey() + " won the game.");
                        entry.getValue().printBoard();
                        return;
                    } 
                }
            }
        }
    }