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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Suppose that we use double hashing to resolve collisions; that is, we use the hash function h(k, i) = (h1(k)+ih2(k)) mod m. Show that if m and h2(k) have greatest common divisor d ≥ 1 for some key k, then an unsuccessful search for key k examines (1/d)th of the hash table before returning to slot h1(k). Thus, when d = 1, so that m and h2(k) are relatively prime, the search may examine the entire hash table. (Hint:See Chapter 31.)
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