Definition: A hash function that uses an auxiliary array, but no shift or exclusive-or (xor) operations.
Generalization (I am a kind of ...)
Note: This hash function may be particularly fast on computers that don't have hardware support for shifting or xor.
Careful choice of the auxiliary table allows construction of a perfect hashing function, a minimal perfect hashing function, or even an order-preserving minimal perfect hashing function.
Peter K. Pearson, Fast Hashing of Variable-Length Text Strings, CACM, 33(6):677-680, June 1990.
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Entry modified 3 February 2009.
HTML page formatted Tue Dec 6 16:16:32 2011.
Cite this as:
Paul E. Black, "Pearson's hash", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed., U.S. National Institute of Standards and Technology. 3 February 2009. (accessed TODAY) Available from: http://www.nist.gov/dads/HTML/pearsonshash.html