I need some help finishing this java code.

import java.util.Random;

public class Deck

{

private final int DECK_SIZE = 52;

private Card[] deck;

// Top of the deck is index 0; bottom is index 51.

private int currentTop;

//

// Allocates a default deck of 52 cards with four suits.

//

public Deck()

{

deck = new Card[DECK_SIZE];

currentTop = 0;

int index = 0;

for (Card.SuitT suit : Card.SuitT.values())

{

for (Card.FaceT face : Card.FaceT.values())

{

deck[index++] = new Card(suit, face);

}

}

}

//

// May assume a full deck.

//

// Shuffles by switching two random cards in the deck many times.

//

public void shuffle()

{

Random rng = new Random();

final int ITERATIONS = 1000;

for (int count = 0; count < ITERATIONS; count++)

{

// TODO

}

}

//

// Computes the number of cards that remain in the deck:

// deck count minus the current top index

//

public int cardsRemaining()

{

// TODO

return DECK_SIZE;

}

//

// Returns the top card from the deck.

//

public Card deal() throws DeckException

{

// TODO

return null;

}

//

// Returns the top card from the deck.

//

public Card[] deal(int numCards) throws DeckException

{

// TODO

return deck;

}

//

// Builds and returns a meaningful representation of the cards that

// remain in the deck.

//

public String toString()

{

String retStr = "";

// TODO

return retStr;

}

}