/*
    CardProgram2.java
    CIS 160
    David Klick
    2016-11-01

    Creates and shuffles a deck of cards, and then
    lets the user search for a card.
*/

public class CardProgram2 {
    public static void main(String[] args) {
        String[] cards = createDeck();
        shuffle(cards);
        
        java.util.Scanner kbd = new java.util.Scanner(System.in);
        System.out.print("Enter the card you want (Enter to exit): ");
        String scard = kbd.nextLine();
        while (scard.length() > 0) {
            int pos = find(cards, scard);
            if (pos != -1) {
                System.out.println("That card is at position " + (pos+1));
            } else {
                System.out.println("That card was not found");
            }

            System.out.print("Enter the card you want (Enter to exit): ");
            scard = kbd.nextLine();
        }
    }
    
    private static int find(String[] cards, String scard) {
        int found = -1;
        for (int i=0; i<cards.length; i++) {
            if (scard.equalsIgnoreCase(cards[i])) {
                found = i;
                break;
            }
        }
        return found;
    }

    private static void shuffle(String[] cards) {
        java.util.Random rnd = new java.util.Random();
        int swaps = 4 * cards.length;
        for (int i=0; i<swaps; i++) {
            int pos1 = rnd.nextInt(cards.length);
            int pos2 = rnd.nextInt(cards.length);
            while (pos1 == pos2) pos2 = rnd.nextInt(cards.length);
            String storage = cards[pos1];
            cards[pos1] = cards[pos2];
            cards[pos2] = storage;
        }
    }

    private static String[] createDeck() {
        String[] cards = new String[52];
        String[] suit = { "Spades", "Hearts", "Clubs", "Diamonds" };
        String[] rank = { "Ace", "Two", "Three", "Four", "Five", "Six",
            "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King" };
        for (int i=0; i<suit.length; i++) {
            for (int j=0; j<rank.length; j++) {
                cards[i*rank.length+j] = rank[j] + " of " + suit[i];
            }
        }
        return cards;
    }
}