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this post was submitted on 23 Sep 2024
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Yeah, #2 is both more space efficient and more time efficient.
How I'd generally do something like that:
Step 3 can definitely be optimized much more with a B-tree and a little thought. If you want jokers included, it's pretty straightforward. (Just change step 2 to generate a random integer between 0 and 53 and tweak steps 5, 6, and 7.)
I think you're approach is generally correct, but you've made a few errors which make it hard to follow (e.g. mixing up suit and denomination).
However, method two is only more efficient if onky a few cards will be drawn. If nearly the entire deck is drawn or dealt, then 1 is superior. Method 1 can be done with two lists and a random number generator. The length of the 2 lists will always sum to 52 and the RNG is used to decide the order that cards are removed from the first list and added to the 2nd. It requires generating at most 51 random numbers.
Good call on both counts!
I went ahead and fixed the suit/denomination mixup. I'll leave the reast as-is so folks can learn from my mistakes and your post continues to make sense.
Cheers!