Re: Random Number Generation

"Daniel Dyer" <"You don't need it">
Sat, 13 Sep 2008 16:49:30 +0100
On Fri, 12 Sep 2008 23:47:31 +0100, <> wrote:

    public Deck() {
        try {
            random = SecureRandom.getInstance(RANDOM_ALGORITHM);
        } catch (NoSuchAlgorithmException e) {
            throw new NoSecureRandomException(e);

    public final void reset() {

    public void shuffle() {
        for (int i=0; i<10; i++) {
            Collections.shuffle(cards, random);

The above code works, except that after a while i begin to see the
same patterns in hands dealt.
I can predict what the other hands would hold and can continue with
correct anticipatory play.
This should not be.
As you can see, I have even tried shuffling 10 times each time.

Any help would be appreciated.

To add to the good advice, you've already received (i.e. don't reseed),
you also don't need to shuffle 10 times, it won't make the outcome any
more random.


Daniel Dyer

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