🚀 go-pugleaf

A quick and dirty way is:

	Card	deck[DECKSIZE];

	for (i=0;i<DECKSIZE;i++)
		deck[i] = i;

	for (i=0;i<SWAPS;i++) {
		firstcard = random(DECKSIZE);
		secondcard = random(DECKSIZE);
		temp = deck[firstcard];
		deck[firstcard] = deck[secondcard];
		deck[secondcard] = temp;
	}

where your Card values run from 0 to DECKSIZE (say 52 or 54), random(N)
returns a random integer in the range 0 to N-1 (inclusive), and SWAPS
is (as I recall from a project many years ago) at least about 100.

Basically it's just:
	swap two randomly selected cards in the deck
	repeat as needed

hope it helps,
	evan