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Dynamic perfect hashing: upper and lower bounds

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6 Author(s)

A randomized algorithm is given for the dictionary problem with O(1) worst-case time for lookup and O(1) amortized expected time for insertion and deletion. An Ω(log n) lower bound is proved for the amortized worst-case time complexity of any deterministic algorithm in a class of algorithms encompassing realistic hashing-based schemes. If the worst-case lookup time is restricted to k, then the lower bound for insertion becomes Ω(kn1k/)

Published in:
Foundations of Computer Science, 1988., 29th Annual Symposium on

Date of Conference: 24-26 Oct 1988

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