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Answer Posted / arun yadav
A hash table, or a hash map, is a data structure that
associates keys with values. The primary operation it
supports efficiently is a lookup: given a key (e.g. a
person's name), find the corresponding value (e.g. that
person's telephone number). It works by transforming the
key using a hash function into a hash, a number that is
used as an index in an array to locate the desired location
("bucket") where the values should be.
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