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I find the task not particularly informative or well posed. Basically, you're required to determine whether the given list of N numbers is a permutation of 1..N, but that's not the way the question is phrased. Instead, it is clothed in some unmotivated definitions (which, incidentally, also have very little to do with Security).
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Security Bijective Functions
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I find the task not particularly informative or well posed. Basically, you're required to determine whether the given list of N numbers is a permutation of 1..N, but that's not the way the question is phrased. Instead, it is clothed in some unmotivated definitions (which, incidentally, also have very little to do with Security).