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  2. Hash array mapped trie - Wikipedia

    en.wikipedia.org/wiki/Hash_array_mapped_trie

    Please help improve it to make it understandable to non-experts, without removing the technical details. ( October 2019 ) ( Learn how and when to remove this message ) A hash array mapped trie [ 1 ] ( HAMT ) is an implementation of an associative array that combines the characteristics of a hash table and an array mapped trie . [ 1 ]

  3. Hash table - Wikipedia

    en.wikipedia.org/wiki/Hash_table

    Java programming language includes the HashSet, HashMap, LinkedHashSet, and LinkedHashMap generic collections. [54] Python's built-in dict implements a hash table in the form of a type. [55] Ruby's built-in Hash uses the open addressing model from Ruby 2.4 onwards. [56] Rust programming language includes HashMap, HashSet as part of the Rust ...

  4. Java collections framework - Wikipedia

    en.wikipedia.org/wiki/Java_collections_framework

    java.util.Collection class and interface hierarchy Java's java.util.Map class and interface hierarchy. The Java collections framework is a set of classes and interfaces that implement commonly reusable collection data structures. [1] Although referred to as a framework, it works in a manner of a library. The collections framework provides both ...

  5. Distributed hash table - Wikipedia

    en.wikipedia.org/wiki/Distributed_hash_table

    A distributed hash table (DHT) is a distributed system that provides a lookup service similar to a hash table. Key–value pairs are stored in a DHT, and any participating node can efficiently retrieve the value associated with a given key.

  6. Linear probing - Wikipedia

    en.wikipedia.org/wiki/Linear_probing

    Linear probing is a component of open addressing schemes for using a hash table to solve the dictionary problem.In the dictionary problem, a data structure should maintain a collection of key–value pairs subject to operations that insert or delete pairs from the collection or that search for the value associated with a given key.

  7. Perfect hash function - Wikipedia

    en.wikipedia.org/wiki/Perfect_hash_function

    A perfect hash function for the four names shown A minimal perfect hash function for the four names shown. In computer science, a perfect hash function h for a set S is a hash function that maps distinct elements in S to a set of m integers, with no collisions.

  8. Bidirectional map - Wikipedia

    en.wikipedia.org/wiki/Bidirectional_map

    In computer science, a bidirectional map is an associative data structure in which the (,) pairs form a one-to-one correspondence.Thus the binary relation is functional in each direction: each can also be mapped to a unique .

  9. Red–black tree - Wikipedia

    en.wikipedia.org/wiki/Red–black_tree

    As of Java 8, the HashMap has been modified such that instead of using a LinkedList to store different elements with colliding hashcodes, a red–black tree is used. This results in the improvement of time complexity of searching such an element from O ( m ) {\displaystyle O(m)} to O ( log ⁡ m ) {\displaystyle O(\log m)} where m ...