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Editorial Team
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Asked: 2026-06-11T12:53:43+00:00

Code Random Randomizer = new Random () ; cardoneA = suits[Randomizer.nextInt(suits.length)]; cardoneAv = ranks[Randomizer.nextInt(ranks.length)];

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Code

Random Randomizer = new Random () ;
  cardoneA = suits[Randomizer.nextInt(suits.length)];
  cardoneAv = ranks[Randomizer.nextInt(ranks.length)];

How can I stop the Randomizer from picking the same cards twice? Eg. If it picks a certain suit and rank, how can I stop it from picking it again? Also, how can I make it pick those two together, so that it can pick another card of the same value, as long as its a different class?

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1 Answer

  1. Editorial Team

    Just simulate a deck of cards like you would do it in real-life:

    1. Store all cards which were not drawn yet in an ArrayList.
    2. generate a random number between 0 and the current size of the ArrayList
    3. remove the card which was picked. The array is now one less in size.

    This algorithm is also known as the Fisher-Yates Shuffle.

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