Improved Permutations with the BigInteger Data Type

(James McCaffrey) A permutation of n items is a rearrangement of those n items. For example, if n = 3 and the three items are the names “Adam”, “Barb”, and “Carl”, one permutation of the items is “Carl”, “Adam”, “Barb”. More generally, a mathematical permutation of order n is a rearrangement of the

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