(Game: pick four cards) Write a program that picks four cards from a deck of 52 cards and computes their sum. An Ace, King, Queen, and Jack represent 1, 13, 12, and 11, respectively. Your program should display the number of picks that yields the sum of 24

/*********************************************************************************
* (Game: pick four cards) Write a program that picks four cards from a deck of 52*
* cards and computes their sum. An Ace, King, Queen, and Jack represent 1, 13,   *
* 12, and 11, respectively. Your program should display the number of picks that *
* yields the sum of 24.                                                          *
*********************************************************************************/
public class Exercise_07_29 {
	/** Main method */
	public static void main(String[] args) {
		int[] deck; // Create array

		do {
			// Initialize deck
			deck = new int[52];

			// Pick four cards
			pickFourCards(deck);	 

		} while (sum(deck) != 24);
		
		// Display the number of picks that yields the sum 24
		print(deck);
	}

	/** pickFourCards randomly picks four cards */
	public static void pickFourCards(int[] deck) {
		for (int i = 0; i < 4; i++) {
			deck[(int)(Math.random() * 52)]++;
		}
	}

	/** sum computes the sum of cards picked */
	public static int sum(int[] deck) {
		int sum = 0;
		for (int i = 0; i < deck.length; i++) {
			sum += ((i + 1) % 13) * deck[i]; 
		}
		return sum;
	}

	/** print displays the number of picks */
	public static void print(int[] deck) {
		String[] ranks = {"Ace", "2", "3", "4", "5", "6", "7", "8", "9",
			"10", "Jack", "Queen", "King"};

		System.out.print("The number of picks that yields the sum of 24: ");
		for (int i = 0; i < deck.length; i++) {
			if (deck[i] > 0)
				System.out.print(ranks[i % 13] + " ");
		}
		System.out.println();
	}
}