c# Blackjack - Need Help

Question

This C# program is suppose to be a blackjack program but I need to 'SHUFFLE' the card and just display the 'HAND'

The rest i think I can manage... can someone help me?

Answer 1

I think it has been already covered here.

Answer 2

One way to shuffle is to create new array and move the cards into that array in a random order

List<Card> unshuffled = new List<Card>(pack);
pack = new Card[NUM_CARDS];
Random r = new Random()
for(int card = 0; card < NUM_CARDS; card++)
{
    pack[card] = unshuffled[r.Next(0, unshuffled.Count -1)];
    unshuffled.remove(pack[card]);
}

You might want to make the Random instance global, as creating a new random each time reduces entropy somewhat. This might not be important if you are not shuffling a lot.

Answer 3

I would recommend just switching each element to random other, heres how:

private void switchElements(Card[] pack, int nr_1, int nr_2) {
    Card temp = pack[nr_1];
    pack[nr_1] = pack[nr_2];
    pack[nr_2] = temp;
}

public void shuffle(Card[] pack) {
    for (int i = pack.length - 1; i > 0; i--) 
        switchElements(pack, i,random.Next(0,i));
}

Answer 4

You could "shuffle" a pack with something as simple as:

var shuffled = pack.OrderBy(c => random.NextDouble());