void CardDeck::newDeck() {

  int i;

  topCard = 0;

  for (i = topCard; i < numCards; i++) {

      cards[i] = i;

  }

  botCard = size = i;

} 

void CardDeck::shuffle() {

  int i;
  int j;
  int temp;
 
  newDeck();

  for (i = 0; i < numCards - 1; i++) {
      
    j = i + rand() / (RAND_MAX / (numCards - i) + 1);

    temp = cards[j];
    cards[j] = cards[i];
    cards[i] = temp;

  }
  
}


int CardDeck::isFull() {

  int next = (botCard + 1) % (numCards + 1);

  if (next == topCard) {
    return (1);
  }
  else {
    return (0);
  }

}


void CardDeck::insert (int card) {

  if (isFull()) {

    cout << "Deck is full!" << endl;

  }
  else {

    size++;
    cards[botCard] = card;
    botCard = (botCard + 1) % (numCards + 1);

  }

}