Even if you manage to construct an insert sequence that, with a particular hash seed, results in Ω(N2) time to insert N keys, that still doesn't prove insertion isn't O(1) amortized time, with the amortization taken over all insert sequences, and/or all hash seeds.

In reply to Re^6: "Just use a hash": An overworked mantra? by JavaFan
in thread "Just use a hash": An overworked mantra? by davido

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