Answer: Hash
In computer
science, an associative array, map, symbol
table, or dictionary is an abstract data type that
stores a collection of (key, value) pairs, such that each
possible key appears at most once in the collection.
The most frequently
used general-purpose implementation of an associative array is with a hash
table: an array combined with a hash function that
separates each key into a separate "bucket" of the array.
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