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Maintain an array of cards that are still available and not already picked. For the purpose of this discussion, I will call this the "deal array" (this must be maintained separately to the deck array! It could start off as a mutable copy of the deck array.).

When you randomly pick/deal a card remove it from the deal array.

Your random number generator should be choosing a number between zero and the number of items left in the deal array - NOT between zero and fifty two.

(Assuming the deal array is not empty - check this before randomly choosing a card from the deal array.)

When selecting a card from the deal array use the random number as an index to the array (not as the card numbers you've created, which are not of any real use for picking cards from the deal array randomly).

(Note that I'm not including any example code here, because it's unclear to me what the purpose of some of your code is. If I tried to post code here, the chances are that I would mis-interpret your code and therefore post incorrect code).