extendible hashing

extendible hashing

A hash table in which the hash function is the last few bits of the key and the table refers to buckets. Table entries with the same final bits may use the same bucket. If a bucket overflows, it splits, and if only one entry referred to it, the table doubles in size. If a bucket is emptied by deletion, entries using it are changed to refer to an adjoining bucket, and the table may be halved.

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Industry/Domain: Computer science
Category: Algorithms & data structures
Government Agency: NIST
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