bridge deck help

Hello everyone,

My teacher is having us do a bridge (cardgame) program in java. This is what I have so far. He set up the methods so we have to use those. What is contained in the methods, I have written. I'm not sure how I'm supposed to get the data back to main from the methods, or even if I'm supposed to. If I am, I can't because they are void. So, I'm not really sure what the point of them would be.

import java.util.Random; //required for random numbers

public class bridge 
{
	static String[] suits = {"Spades", "Hearts", "Diamonds", "Clubs"};
	static String[] ranks = {"2", "3", "4", "5", "6", "7", "8",
				 "9", "10", "Jack", "Queen", "King", "Ace"};
	
	public static void main(String[] args) 
	{
		int[] deck = new int[52];	
	

		unwrap(deck);
		shuffle(deck);
		
		final int CARDS_PER_HAND = 13;
		
		int[] north = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 0);
		showHand(north, "North");

		int[] east = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 1);
		showHand(east, "East");
		
		int[] south = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 2);
		showHand(south, "South");
		            
		int[] west = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 3);
		showHand(west, "West");
	}

	public static void unwrap(int[] pack)   
	// Initialize the deck - creates an array for the deck that is 52 cards long (0-51)
	{
		for(int i = 0; i < pack.length; i++)
			pack[i] = i;
		
	}

	public static void shuffle(int[] deck) 
	//Shuffle the deck
	{
		for (int i = 0; i < deck.length; i++)
		{
			int index = (int) (Math.random() * deck.length);
			int temp = deck[i];
			deck[i] = deck[index];
			deck[index] = temp;
		}
	}

	public static int[] deal(int[] deck, int n, int offset) 
	//Deal “n” cards offset from the beginning of the deck.  Return the hand dealt as an array of integers.
	{
		return deck;
		
	}

	public static void showHand(int[] hand, String player) 
	//Show a player’s hand sorted by suit and rank.  The name of the player is passed as a string.
	{  
	
	}
	
}

Actually - here's the original blank slate that we started with:

public class bridge 
{
	static String[] suits = {"Spades", "Hearts", "Diamonds", "Clubs"};
	static String[] ranks = {"2", "3", "4", "5", "6", "7", "8",
				 "9", "10", "Jack", "Queen", "King", "Ace"};
	
	public static void main(String[] args) 
	{
		int[] deck = new int[52];	
	

		unwrap(deck);
		shuffle(deck);
		
		final int CARDS_PER_HAND = 13;
		
		int[] north = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 0);
		showHand(north, "North");

		int[] east = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 1);
		showHand(east, "East");
		
		int[] south = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 2);
		showHand(south, "South");
		            
		int[] west = deal(deck, CARDS_PER_HAND, CARDS_PER_HAND * 3);
		showHand(west, "West");
	}

	public static void unwrap(int[] pack)   
	// Initialize the deck 
	{
	
	}

	public static void shuffle(int[] deck) 
	//Shuffle the deck
	{
		
	}

	public static int[] deal(int[] deck, int n, int offset) 
	//Deal “n” cards offset from the beginning of the deck.
	{
		
		
	}

	public static void showHand(int[] hand, String player) 
	//Show a player’s hand sorted by suit and rank.  The name of the player is passed as a string.
	{  
	
	}
	
}