public int compare(Card other){
		if(this == other){
			return 0;
		}
		
		if(this.getCardNum() < other.getCardNum()){
			return -1;
		}
		
		if(this.getCardNum() > other.getCardNum()){
			return 1;
		}
		
		if(this.getCardNum() == other.getCardNum()){
			return 0;
		}
		
		return 1;
	}