# Question

Prove that a comparison network with n inputs correctly sorts the input sequence ¬n, n - 1,..., 1¬ if and only if it correctly sorts the n - 1 zero-one sequences ¬1, 0, 0,..., 0, 0¬, ¬1, 1, 0,..., 0, 0¬,..., ¬1, 1, 1,..., 1, 0¬.

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