Black Jack Code

import java.util.Scanner;
import java.lang.Math;
public class BlackJack
{

	public static int pickANum(int[] cards)
	{
		int num = 0;

		for (int i = 0; i < 2; i++)
		{
			num = ((int)(Math.random() * 104 + 1));
			while (cards[num] == -1)
				num = ((int)(Math.random() * 104 + 1));
		}

		return num;
	}

	public static int[] update(int[] cards, int[] hand)
	{

		for (int i = 0; i < cards.length; i++)
		{
			if (cards[i] == hand[i])
			{
				cards[i] = -1;
			}
		}

		return cards;
	}

	public static String[] convert(int[] hand)
	{
		String[] hand2 = new String[20];
		for (int i = 0; i < hand.length; i++)
			hand2[i] = "" + hand[i];

		for (int i = 0; i < hand.length; i++)
		{
			if (hand[i] % 1 == 0)
				hand2[i] = "A spades";
			if (hand[i] % 2 == 0)
				hand2[i] = "2 spades";
			if (hand[i] % 3 == 0)
				hand2[i] = "3 spades";
			if (hand[i] % 4 == 0)
				hand2[i] = "4 spades";
			if (hand[i] % 5 == 0)
				hand2[i] = "5 spades";
			if (hand[i] % 6 == 0)
				hand2[i] = "6 spades";
			if (hand[i] % 7 == 0)
				hand2[i] = "7 spades";
			if (hand[i] % 8 == 0)
				hand2[i] = "8 spades";
			if (hand[i] % 9 == 0)
				hand2[i] = "9 spades";
			if (hand[i] % 10 == 0)
				hand2[i] = "10 spades";
			if (hand[i] % 11 == 0)
				hand2[i] = "J spades";
			if (hand[i] % 12 == 0)
				hand2[i] = "Q spades";
			if (hand[i] % 13 == 0)
				hand2[i] = "K spades";

			if (hand[i] % 14 == 0)
				hand2[i] = "A diamonds";
			if (hand[i] % 15 == 0)
				hand2[i] = "2 diamonds";
			if (hand[i] % 16 == 0)
				hand2[i] = "3 diamonds";
			if (hand[i] % 17 == 0)
				hand2[i] = "4 diamonds";
			if (hand[i] % 18 == 0)
				hand2[i] = "5 diamonds";
			if (hand[i] % 19 == 0)
				hand2[i] = "6 diamonds";
			if (hand[i] % 20 == 0)
				hand2[i] = "7 diamonds";
			if (hand[i] % 21 == 0)
				hand2[i] = "8 diamonds";
			if (hand[i] % 22 == 0)
				hand2[i] = "9 diamonds";
			if (hand[i] % 23 == 0)
				hand2[i] = "10 diamonds";
			if (hand[i] % 24 == 0)
				hand2[i] = "J diamonds";
			if (hand[i] % 25 == 0)
				hand2[i] = "Q diamonds";
			if (hand[i] % 26 == 0)
				hand2[i] = "K diamonds";

			if (hand[i] % 27 == 0)
				hand2[i] = "A clubs";
			if (hand[i] % 28 == 0)
				hand2[i] = "2 clubs";
			if (hand[i] % 29 == 0)
				hand2[i] = "3 clubs";
			if (hand[i] % 30 == 0)
				hand2[i] = "4 clubs";
			if (hand[i] % 31 == 0)
				hand2[i] = "5 clubs";
			if (hand[i] % 32 == 0)
				hand2[i] = "6 clubs";
			if (hand[i] % 33 == 0)
				hand2[i] = "7 clubs";
			if (hand[i] % 34 == 0)
				hand2[i] = "8 clubs";
			if (hand[i] % 35 == 0)
				hand2[i] = "9 clubs";
			if (hand[i] % 36 == 0)
				hand2[i] = "10 clubs";
			if (hand[i] % 37 == 0)
				hand2[i] = "J clubs";
			if (hand[i] % 38 == 0)
				hand2[i] = "Q clubs";
			if (hand[i] % 39 == 0)
				hand2[i] = "K clubs";

			if (hand[i] % 40 == 0)
				hand2[i] = "A hearts";
			if (hand[i] % 41 == 0)
				hand2[i] = "2 hearts";
			if (hand[i] % 42 == 0)
				hand2[i] = "3 hearts";
			if (hand[i] % 43 == 0)
				hand2[i] = "4 hearts";
			if (hand[i] % 44 == 0)
				hand2[i] = "5 hearts";
			if (hand[i] % 45 == 0)
				hand2[i] = "6 hearts";
			if (hand[i] % 46 == 0)
				hand2[i] = "7 hearts";
			if (hand[i] % 47 == 0)
				hand2[i] = "8 hearts";
			if (hand[i] % 48 == 0)
				hand2[i] = "9 hearts";
			if (hand[i] % 49 == 0)
				hand2[i] = "10 hearts";
			if (hand[i] % 50 == 0)
				hand2[i] = "J hearts";
			if (hand[i] % 51 == 0)
				hand2[i] = "Q hearts";
			if (hand[i] % 52 == 0)
				hand2[i] = "K hearts";

			if (hand[i] % 53 == 0)
				hand2[i] = "A spades";
			if (hand[i] % 54 == 0)
				hand2[i] = "2 spades";
			if (hand[i] % 55 == 0)
				hand2[i] = "3 spades";
			if (hand[i] % 56 == 0)
				hand2[i] = "4 spades";
			if (hand[i] % 57 == 0)
				hand2[i] = "5 spades";
			if (hand[i] % 58 == 0)
				hand2[i] = "6 spades";
			if (hand[i] % 59 == 0)
				hand2[i] = "7 spades";
			if (hand[i] % 60 == 0)
				hand2[i] = "8 spades";
			if (hand[i] % 61 == 0)
				hand2[i] = "9 spades";
			if (hand[i] % 62 == 0)
				hand2[i] = "10 spades";
			if (hand[i] % 63 == 0)
				hand2[i] = "J spades";
			if (hand[i] % 64 == 0)
				hand2[i] = "Q spades";
			if (hand[i] % 65 == 0)
				hand2[i] = "K spades";

			if (hand[i] % 66 == 0)
				hand2[i] = "A diamonds";
			if (hand[i] % 67 == 0)
				hand2[i] = "2 diamonds";
			if (hand[i] % 68 == 0)
				hand2[i] = "3 diamonds";
			if (hand[i] % 69 == 0)
				hand2[i] = "4 diamonds";
			if (hand[i] % 70 == 0)
				hand2[i] = "5 diamonds";
			if (hand[i] % 71 == 0)
				hand2[i] = "6 diamonds";
			if (hand[i] % 72 == 0)
				hand2[i] = "7 diamonds";
			if (hand[i] % 73 == 0)
				hand2[i] = "8 diamonds";
			if (hand[i] % 74 == 0)
				hand2[i] = "9 diamonds";
			if (hand[i] % 75 == 0)
				hand2[i] = "10 diamonds";
			if (hand[i] % 76 == 0)
				hand2[i] = "J diamonds";
			if (hand[i] % 77 == 0)
				hand2[i] = "Q diamonds";
			if (hand[i] % 78 == 0)
				hand2[i] = "K diamonds";

			if (hand[i] % 79 == 0)
				hand2[i] = "A clubs";
			if (hand[i] % 80 == 0)
				hand2[i] = "2 clubs";
			if (hand[i] % 81 == 0)
				hand2[i] = "3 clubs";
			if (hand[i] % 82 == 0)
				hand2[i] = "4 clubs";
			if (hand[i] % 83 == 0)
				hand2[i] = "5 clubs";
			if (hand[i] % 84 == 0)
				hand2[i] = "6 clubs";
			if (hand[i] % 85 == 0)
				hand2[i] = "7 clubs";
			if (hand[i] % 86 == 0)
				hand2[i] = "8 clubs";
			if (hand[i] % 87 == 0)
				hand2[i] = "9 clubs";
			if (hand[i] % 88 == 0)
				hand2[i] = "10 clubs";
			if (hand[i] % 89 == 0)
				hand2[i] = "J clubs";
			if (hand[i] % 90 == 0)
				hand2[i] = "Q clubs";
			if (hand[i] % 91 == 0)
				hand2[i] = "K clubs";

			if (hand[i] % 92 == 0)
				hand2[i] = "A hearts";
			if (hand[i] % 93 == 0)
				hand2[i] = "2 hearts";
			if (hand[i] % 94 == 0)
				hand2[i] = "3 hearts";
			if (hand[i] % 95 == 0)
				hand2[i] = "4 hearts";
			if (hand[i] % 96 == 0)
				hand2[i] = "5 hearts";
			if (hand[i] % 97 == 0)
				hand2[i] = "6 hearts";
			if (hand[i] % 98 == 0)
				hand2[i] = "7 hearts";
			if (hand[i] % 99 == 0)
				hand2[i] = "8 hearts";
			if (hand[i] % 100 == 0)
				hand2[i] = "9 hearts";
			if (hand[i] % 101 == 0)
				hand2[i] = "10 hearts";
			if (hand[i] % 102 == 0)
				hand2[i] = "J hearts";
			if (hand[i] % 103 == 0)
				hand2[i] = "Q hearts";
			if (hand[i] % 104 == 0)
				hand2[i] = "K hearts";
		}

		return hand2;
	}

	/*public static int[] pHit()
	{

	}

	public static int[] pStay()
	{
		//allow dealer to hit until > 16
	}*/

	public static String check4win(String c, String d)
	{
		int e = 0;
		int f = 0;
		String x = "lose";

		if (d.substring(0,1).equals("A"))
			f = 11;
		if (d.substring(0,1).equals("2"))
			f = 2;
		if (d.substring(0,1).equals("3"))
			f = 3;
		if (d.substring(0,1).equals("4"))
			f = 4;
		if (d.substring(0,1).equals("5"))
			f = 5;
		if (d.substring(0,1).equals("6"))
			f = 6;
		if (d.substring(0,1).equals("7"))
			f = 7;
		if (d.substring(0,1).equals("8"))
			f = 8;
		if (d.substring(0,1).equals("9"))
			f = 9;
		if (d.substring(0,1).equals("10"))
			f = 10;
		if (d.substring(0,1).equals("J"))
			f = 10;
		if (d.substring(0,1).equals("Q"))
			f = 10;
		if (d.substring(0,1).equals("K"))
			f = 10;


		if (c.substring(0,1).equals("A"))
			e=11;
		if (c.substring(0,1).equals("2"))
			e=2;
		if (c.substring(0,1).equals("3"))
			e=3;
		if (c.substring(0,1).equals("4"))
			e=4;
		if (c.substring(0,1).equals("5"))
			e=5;
		if (c.substring(0,1).equals("6"))
			e=6;
		if (c.substring(0,1).equals("7"))
			e=7;
		if (c.substring(0,1).equals("8"))
			e=8;
		if (c.substring(0,1).equals("9"))
			e=9;
		if (c.substring(0,1).equals("10"))
			e=10;
		if (c.substring(0,1).equals("J"))
			e=10;
		if (c.substring(0,1).equals("Q"))
			e=10;
		if (c.substring(0,1).equals("K"))
			e=10;


		if ((e + f) == 21)
		{
			x = "win";
			//System.out.println("We have a winner!");
			//System.out.println();
		}
		return x;
	}

	public static void main(String[] args)
	{
		Scanner scan = new Scanner(System.in);

		System.out.println("Let's play a game of Black Jack!");
		System.out.println();

		int[] cards = new int[104];
		for (int i = 0; i < cards.length; i++)
			cards[i] = i + 1;

		int[] dealerHand = new int[20];
		for (int i = 0; i < 2; i++)
			dealerHand[i] = pickANum(cards);
		System.out.print("Dealer's hand: \t");
		String[] dealerHand2 = new String[dealerHand.length];
		for (int i = 0; i < 1; i++)
		{
			if (dealerHand[i] != 0)
			{
				dealerHand2 = convert(dealerHand);
				System.out.print(dealerHand2[i] + " ");
			}
		}
		System.out.print("???");
		System.out.println();

		int[] playerHand = new int[20];
		for (int i = 0; i < 2; i++)
			playerHand[i] = pickANum(cards);
		System.out.print("Your hand: \t");
		String[] playerHand2 = new String[playerHand.length];
		for (int i = 0; i < playerHand.length; i++)
		{
			if (playerHand[i] != 0)
			{
				playerHand2 = convert(playerHand);
				System.out.print(playerHand2[i] + " ");
			}
		}
		System.out.println();
		System.out.println();

		if (check4win(playerHand2[0], playerHand2[1]) == "win")
		{
			System.out.println("\tYou win. You have 21.");
			System.out.println();
		}

		if (check4win(dealerHand2[0], dealerHand2[1]) == "win")
		{
			System.out.println("\tYou lose. The dealer has 21.");
			System.out.println();
		}

		System.out.println("Would you like to hit or stay?");
		/*String ans = scan.nextLine();
		if (ans.equals("hit"))
			pHit();
		if (ans.equals("stay"))
			pStay();*/

	}

}