boolean hasPokerFlush(){

        int matches = 0;
        Card previousCard = new Card('x',-1);

        //go trough every card
        for(Card c:cards){

            //if card suits match
            if(c.getSuit()==previousCard.getSuit()){

                //increase matches variable by one
                matches++;
            }else{

                //else start again
                matches=0;
            }

            //if a deck has 5 suit matches it is a flush
            if(matches==5){
                return true;
            }

            previousCard = c;
        }

        //didn't find flush in deck, must be false
        return false;
    }