RouletteGame

   public enum GameStatus{
        WIN ,
        LOSE
    }
    public boolean rouletteGame(int totalMoney){
        GameStatus status;
        int minBetAmt = 10;
        // red = 0, black = 1
        int winningAmt = 2 * totalMoney;
        int loseAmt = 0;
        int balanceMoney = totalMoney;

        Integer prevColor = null;
        int redCounter = 0;
        int blackCounter = 0;
        while(true){
            if(balanceMoney == winningAmt){
                status = GameStatus.WIN;
                break;
            }
            else if(balanceMoney == loseAmt){
                status = GameStatus.LOSE;
                break;
            }
            else{ // continue playing
                int curColor = randomSpin();
                if(prevColor == null){ // very first spin
                    if(curColor == 0){
                        redCounter++;
                    }
                    else{
                        blackCounter++;
                    }
                    prevColor = curColor;
                }
                else{
                    if(redCounter == 4){ // the gambler bets on black
                        if(curColor == 1){ // winner
                            balanceMoney += minBetAmt;
                        }
                        else{ // loser
                            balanceMoney -= minBetAmt;

                        }
                    }
                    else if(blackCounter == 4){ // the gambler bets on red
                        if(curColor == 0){ // winner
                            balanceMoney += minBetAmt;
                        }
                        else{ // loser
                            balanceMoney -= minBetAmt;
                        }
                    }

                    if(curColor == 0){ // cur color is red
                        if(prevColor == curColor){ // cur color is red and prev color is also red
                            redCounter++;
                        }
                        else{
                            redCounter = 1;
                            prevColor = curColor;
                        }
                        blackCounter = 0;
                    }
                    else{ // cur color is black
                        if(prevColor == curColor){
                            blackCounter++;
                        }
                        else {
                            blackCounter = 1;
                            prevColor = curColor;
                        }
                        redCounter = 0;
                    }
                }
            }
        }

        if(status == GameStatus.WIN){
            return true;
        }
        else {
            return false;
        }
    }