A length preserving function is where the key, the index and the result are all the...

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A length preserving function is where the key, the index and the result are all the same size. For example the function F: {0, 1}" × {0,1}" → {0, 1}". If n = 4, how many different such functions are there? A length preserving function is where the key, the index and the result are all the same size. For example the function F: {0, 1}" × {0,1}" → {0, 1}". If n = 4, how many different such functions are there?

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function takes A lengthpreserving input from two nbit strings ... View the full answer