help

[nishant]

here is my code ...could u please solve this issue. i have a problem while using the deck.length.



public static void cardList(int numHands,int cardsPerHand){
List<String> deck,hand;
//52-card deck

String[]suit=new String[]{"S","H","D","C"};
String[] rank=new String[]{"A","2","3","4","5","6","7","8","9","10","J","Q", "K"};

deck=new ArrayList<String>();
for(int i=0;i<deck.length; i++){
for(int j=i;j<deck.length;j++){
deck.add(rank[i]+"-"+suit[j]);
}
}

Collections.shuffle(deck);//shuffles the heap of the crads

//dealing the cards
for(int i=0;i<numHands;i++){
hand=deck.subList(deck.size()-cardsPerHand,deck.size());
System.out.println(hand);
//hand.clear();//removes the sub-list from the list
}}}

[masijade]

Read the API docs for ArrayList and tell me whether or not there is a length field in that Class, and what the method is that you should use instead.

ArrayList (Java Platform SE 6)

Edit: Besides, shouldn't you be using suit and rank instead? At that point, since you've just created it, the ArrayList is empty.

[satu]

replace your code with this....

String[]suit=new String[]{"S","H","D","C"};
String[] rank=new String[]{"A","2","3","4","5","6","7","8","9","10","J"," Q", "K"};

deck=new ArrayList<String>();
for(int i=0;i<rank.length; i++){
for(int j=i;j<suit.length;j++){
deck.add(rank[i]+"-"+suit[j]);
}
}

before adding any element List is empty and not work for you here..