If you want to create permutations, most algorithms are recursive. That means if you only want the 10,000th permutation you have to calculate the 9999 permutations before it. I was interested in calculating random-access permutations so every permutation calculation takes the same amount of time. So I wrote an algorithm and wrote up the process here.
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If you want to create permutations, most algorithms are recursive. That means if you only want the 10,000th permutation you have to calculate the 9999 permutations before it. I was interested in calculating random-access permutations so every permutation calculation takes the same amount of time. So I wrote an algorithm and wrote up the process here.