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computer science, a hashed array tree (HAT) is a dynamic array data-structure published by Edward Sitarski in 1996, maintaining an array of separate memory
Hashed_array_tree
List data structure to which elements can be added/removed
Functional Lists, Hash-Lists, Deques and Variable Length Arrays, EPFL Mike Lam. "Dynamic Arrays". "Amortized Time". "Hashed Array Tree: Efficient representation
Dynamic_array
Topics referred to by the same term
Look up hash tree in Wiktionary, the free dictionary. In computer science, hash tree may refer to: Hashed array tree Hash tree (persistent data structure)
Hash_tree
Formatted data in computer science
version of the more general notion of a hash tree. A HAMT is an array mapped trie where the keys are first hashed to ensure an even distribution of keys
Hash_array_mapped_trie
Type of data structure
Array types are often implemented by array structures; however, in some languages they may be implemented by hash tables, linked lists, search trees,
Array_(data_structure)
Data organization and storage formats
Distributed hash table Double hashing Dynamic perfect hash table Hash array mapped trie Hash list Hash table Hash tree Hash trie Koorde Prefix hash tree Rolling
List_of_data_structures
Associative array for storing key–value pairs
is hashed and the resulting hash indicates where the corresponding value is stored. A map implemented by a hash table is called a hash map. Most hash table
Hash_table
Data structure holding key/value pairs
structures that implement associative arrays. The two major solutions to the dictionary problem are hash tables and search trees. It is sometimes also possible
Associative_array
Index of articles associated with the same name
order to perform efficient lookups and updates" Hash array mapped trie Hashed array tree Merkle tree Liang, Frank Mark (June 1983). Word hy-phen-a-tion
Hash_trie
Data structure with nodes pointing to the next node
in pipelining). Faster access, such as random access, is not feasible. Arrays have better cache locality compared to linked lists. Linked lists are among
Linked_list
Computer communications authentication algorithm
following hash functions: SHA-1, MD5, RIPEMD-128. function hmac is input: key: Bytes // Array of bytes message: Bytes // Array of bytes to be hashed hash: Function
HMAC
Mapping arbitrary data to fixed-size values
hashed is small enough, then one can use the data itself (reinterpreted as an integer) as the hashed value. The cost of computing this identity hash function
Hash_function
Formatted data in computer science
science, a hash tree (or hash trie) is a persistent data structure that can be used to implement sets and maps, intended to replace hash tables in purely
Hash tree (persistent data structure)
Hash_tree_(persistent_data_structure)
Topics referred to by the same term
Attached on Top, expansion board format for the Raspberry Pi computer. Hashed array tree, in computer programming. Help authoring tool, software for "help"
Hat_(disambiguation)
Computer programming data structure
linearly with the size of the list. CDR coding Skip list T-tree XOR linked list Hashed array tree Shao, Z.; Reppy, J. H.; Appel, A. W. (1994), "Unrolling
Unrolled_linked_list
Abstract data type
onto the array or linked list, with few other helper operations. The following will demonstrate both implementations using pseudocode. An array can be used
Stack_(abstract_data_type)
Implementation of an associative array
than implementations of AVL trees, B-trees, hash tables, or skip lists from the same time period.[needs update] The Judy array was invented by Douglas Baskins
Judy_array
Cryptographic hash function
a 4×4 array of words. BLAKE repeatedly combines an 8-word hash value with 16 message words, truncating the ChaCha result to obtain the next hash value
BLAKE_(hash_function)
Data structure for approximate set membership
counting Bloom filters, at each element insertion, the hashed counters are incremented by a hashed variable increment instead of a unit increment. To query
Bloom_filter
appear in multiple comparisons (for example, a hash map can be used to implement an associative array or a set). A list or sequence is an abstract data
Comparison_of_data_structures
Data structure
Deterministic finite automata Judy array Search algorithm Extendible hashing Hash array mapped trie Prefix hash tree Burstsort Luleå algorithm Huffman
Radix_tree
Search tree data structure
resolve mask-based operations in IP routing. Suffix tree Hash trie Hash array mapped trie Prefix hash tree Ctrie HAT-trie Aho–Corasick algorithm Maabar, Maha
Trie
Search algorithm finding the position of a target value within a sorted array
unbounded lists. The binary search tree and B-tree data structures are based on binary search. Binary search works on sorted arrays. Binary search begins by comparing
Binary_search
Hashing technique
more even redistribution of BLOBs on server failure, each server can be hashed to multiple locations on the unit circle. When a server fails, the BLOBs
Consistent_hashing
Disambiguation article
indexed Associative array, an abstract data structure model composed of key-value pairs, often implemented as a hash table or search tree or various kinds
Array
Data type that represents an ordered collection of elements (values or variables)
are often implemented by array data structures, but sometimes by other means, such as hash tables, linked lists, or search trees. Heinz Rutishauser's programming
Array_(data_type)
2015 password-based key derivation function
internally built upon Blake2. Function Hash(message, digestSize) Inputs: message: Bytes (0..232-1) Message to be hashed digestSize: Integer (1..232) Desired
Argon2
Any node-based binary search tree that automatically keeps its height the same
search trees provide efficient implementations for mutable ordered lists, and can be used for other abstract data structures such as associative arrays, priority
Self-balancing binary search tree
Self-balancing_binary_search_tree
Algorithm for speeding up cellular automaton simulations
structure, of which the hashed quadtree is one Hash consing, which was the key strategy used in the original implementation of Hashlife. HashLife algorithm description
Hashlife
Tree data structure
elements) can be used. A vEB tree supports the operations of an ordered associative array, which includes the usual associative array operations along with two
Van_Emde_Boas_tree
Tree containing all suffixes of a given text
efficient running time properties use hash maps, sorted or unsorted arrays (with array doubling), or balanced search trees. We are interested in: The cost of
Suffix_tree
In computer science, a fusion tree is a type of tree data structure that implements an associative array on w-bit integers on a finite universe, where
Fusion_tree
Collections in Java
EnumMap, HashMap, IdentityHashMap, TreeMap and WeakHashMap. EnumMap extends AbstractMap. EnumMap has comparable speed with an ordinal-indexed array. This
Java_collections_framework
Hash function construction used in computer programs that play abstract board games
the rook at the source square) This makes Zobrist hashing very efficient for traversing a game tree. In computer Go, this technique is also used for superko
Zobrist_hashing
Abstract data type for storing distinct values
for hashed sets, and also implements sorted sets. LabVIEW has native support for sets, from version 2019. Ada provides the Ada.Containers.Hashed_Sets
Set_(abstract_data_type)
Set of cryptographic hash functions
chunks, the initial hash values and round constants are extended to 64 bits, there are 80 rounds instead of 64, the message schedule array w has 80 64-bit
SHA-2
Data structure that always preserves the previous version of itself when it is modified
modification in the array. Alternatively, one can employ the van Emde Boas tree at each node (possibly the space-efficient version using hashing) to reduce the
Persistent_data_structure
associative array classes: std::map (a red-black tree, equivalent to TreeMap in other languages) and std::unordered_map (a hash table, equivalent to HashMap in
Comparison of programming languages (associative array)
Comparison_of_programming_languages_(associative_array)
Overview of and topical guide to algorithms
structure) Binary tree Binary search tree AVL tree Red–black tree B-tree B+ tree Trie Segment tree Fenwick tree Heap (data structure) Hash table Hash function
Outline_of_algorithms
Set of cryptographic hash functions
Keccak by allowing an additional d bits of input to be hashed each iteration. However, the hash functions would not have been drop-in replacements with
SHA-3
Password-based key derivation function
iterations salt: array of Bytes (16 bytes) random salt password: array of Bytes (1..72 bytes) UTF-8 encoded password Output: hash: array of Bytes (24 bytes)
Bcrypt
Algorithm
performance. Several modifications to rendezvous hashing have been proposed to overcome this limitation. The Cache Array Routing Protocol (CARP) is a 1998 IETF
Rendezvous_hashing
Rooted binary tree data structure
search trees are also a fundamental data structure used in construction of abstract data structures such as sets, multisets, and associative arrays. Searching
Binary_search_tree
Particular way of storing and organizing data in a computer
Relational databases commonly use B-tree indice for data retrieval, while compiler implementations usually use hash tables to look up identifiers. Filesystems
Data_structure
Data structure
ternary search tree is a type of trie (sometimes called a prefix tree) where nodes are arranged in a manner similar to a binary search tree, but with up
Ternary_search_tree
Data type in computer science
associative array is often implemented as a hash table, so these abstract types are often referred to by this preferred implementation, as a "heap" or a "hash",
Collection (abstract data type)
Collection_(abstract_data_type)
Any algorithm which solves the search problem
efficient by specially constructed database structures, such as search trees, hash maps, and database indexes. Search algorithms can be classified based
Search_algorithm
Self-balancing binary search tree data structure
Left-leaning red–black tree AVL tree B-tree (2–3 tree, 2–3–4 tree, B+ tree, B*-tree, UB-tree) Scapegoat tree Splay tree T-tree WAVL tree GNU libavl Cormen
Red–black_tree
Computer science problem
same 1D array by traversing the inner loop backwards Store only non-zero values in the rows. This can be done using hash-tables instead of arrays. This
Longest_common_substring
Data structure in chess programs for game state
the tree is traversed. Some of the very earliest chess programs working with extremely limited amounts of memory maintained serial lists (arrays) of the
Board representation (computer chess)
Board_representation_(computer_chess)
programming language, autovivification is the automatic creation of new arrays and hashes as required every time an undefined value is dereferenced. Perl autovivification
Autovivification
Problem in computational complexity theory
model of computing or real RAM, for which hashing is not allowed. The algorithm below first sorts the input array and then tests all possible pairs in a
3SUM
presented a time and space efficient solution for tries named Array Mapped Tree (AMT). The Hash array mapped trie (HAMT) is based on AMT. The compact trie node
Bitwise_trie_with_bitmap
Divide and conquer sorting algorithm
works by selecting a "pivot" element from the array and partitioning the other elements into two sub-arrays, according to whether they are less than or
Quicksort
Cryptographic hash function
One-zeros padding of a given bit string message. Conversion to 32-word array message blocks from the padded bit string message. Initialization of a chaining
LSH_(hash_function)
Mapping function that preserves data point locality
such as simple one dimensional arrays, binary search trees, B-trees, skip lists or (with low significant bits truncated) hash tables. The resulting ordering
Z-order_curve
2009 password-based key derivation function
Passphrase: Bytes string of characters to be hashed Salt: Bytes string of random characters that modifies the hash to protect against Rainbow table attacks
Scrypt
Data structure which is efficient to both store in memory and query
representation techniques, including binary trees, k {\displaystyle k} -ary trees and multisets, as well as suffix trees and arrays. The basic problem is to store
Succinct_data_structure
that uses array nodes to collect individual key–value pairs under radix nodes and hash buckets into an associative array. Unlike a simple hash table, HAT-tries
HAT-trie
Cryptographic hash function
Grøstl is a cryptographic hash function submitted to the NIST hash function competition by Praveen Gauravaram, Lars Knudsen, Krystian Matusiewicz, Florian
Grøstl
Random search tree data structure
position pos we divide the array into two subsections [0...pos-1] and [pos..sz] by calling the split function and we get two trees T 1 {\displaystyle T1}
Treap
Human-readable data serialization language
multi-line strings is inspired by HTML. Lists and hashes can contain nested lists and hashes, forming a tree structure; arbitrary graphs can be represented
YAML
{\displaystyle m} positions in the array. In the beginning, all bits of the array are set to zero. To insert an element, all hash functions are calculated and
Approximate membership query filter
Approximate_membership_query_filter
graph Grid (spatial index) Index (database), quadtree, k-d tree, UB-tree, R-tree, range tree as alternatives. J. Nievergelt, H. Hinterberger The Grid File:
Grid_file
Family of cryptographic hash functions
In cryptography, the fast syndrome-based hash functions (FSB) are a family of cryptographic hash functions introduced in 2003 by Daniel Augot, Matthieu
Fast_syndrome-based_hash
LSM-Tree is the Sorted Array Merge Tree or SAMT. In this variation, a SAMT's component trees are called Wanna-B-trees. Each Wanna-B-tree has an associated
Quotient_filter
In programming, a reference which does not protect its object from garbage collection
weak reference for a link in the cycle. When one has an associative array (mapping, hash map) whose keys are (references to) objects, for example to hold
Weak_reference
JData Specification
including scalars, N-dimensional arrays, sparse/complex-valued arrays, maps, tables, hashes, linked lists, trees and graphs, and support optional data
JData
Linked list of key-value pairs
times that can be obtained by representing an associative array as a binary search tree or as a hash table. Additionally, unless the list is regularly pruned
Association_list
object identifier which is itself managed via a static hash index. A static hash index is simply an array index where the location containing the address of
ObjectDatabase++
Collection of C++ libraries
data structures such as associative arrays, search trees, string manipulation, command-line flag processing, hash functions, pseudorandom number generation
Abseil_(C++_libraries)
Programming language
syntax tree from another language, then compile the tree to a Csound performance runtime. There is a new built-in multi-dimensional array type. Arrays can
Csound
Software programming optimization technique
a function object parameter) if F has no attached array values then allocate an associative array called values; attach values to F; end if; if F.values[arguments]
Memoization
Data structure in computer science
multidict or multidictionary) is a generalization of a map or associative array abstract data type in which more than one value may be associated with and
Multimap
Method in computer programming of forming higher-level object types
matters for the former but not the latter. Data structures such as arrays, linked lists, hash tables, and many others can be used to implement either of them
Object_composition
Rules governing the functioning of cryptocurrency
innovation. The mining process involves identifying a block that, when hashed twice with SHA-256, yields a number smaller than the given difficulty target
Bitcoin_protocol
Functional programming construct
| Tree (Black, Tree (Red, a, x, Tree (Red, b, y, c)), z, d) | Tree (Black, a, x, Tree (Red, Tree (Red, b, y, c), z, d)) | Tree (Black, a, x, Tree (Red
Pattern_matching
search Key-sorted array; see binary search Self-balancing binary search tree Hash table Heap In this table, the asymptotic notation O(f(n)) means "not exceeding
Search_data_structure
Method of a dimension reduction
to improve the variance of the previous estimate is to use an array of different hash functions s i {\displaystyle s_{i}} , each connected to its own
Count_sketch
Cryptographic hash function
CubeHash is a cryptographic hash function submitted to the NIST hash function competition by Daniel J. Bernstein. CubeHash has a 128 byte state, uses wide
CubeHash
Key-value database management system
db uses hashed tables the same as the other DBM databases, but the library also can create databases based on a sorted balanced binary tree (BTREE) and
DBM_(computing)
Probabilistic data structure in computer science
table of events in a stream of data. It uses hash functions to map events to frequencies, but unlike a hash table uses only sub-linear space, at the expense
Count–min_sketch
Two-dimensional cellular automaton
store cells as a two-dimensional arrays, instead using algorithms such as Hashlife which represent patterns as a tree structure. The Game of Life has spawned
Conway's_Game_of_Life
Data structure implementable in purely functional languages
such as arrays admit a destructive update, that is, an update which cannot be reversed. Once a program writes a value in some index of the array, its previous
Purely functional data structure
Purely_functional_data_structure
Involutive change of basis in linear algebra
{2}}}\left({\begin{array}{rr}1&1\\1&-1\end{array}}\right)\\[5pt]H_{2}&={\frac {1}{2}}\left({\begin{array}{rrrr}1&1&1&1\\1&-1&1&-1\\1&1&-1&-1\\1&-1&-1&1\end{array
Hadamard_transform
Measures of how efficiently algorithms use resources
with a balanced random number generator, almost each permutation of the array is yielded in n! iterations. Computers have limited memory, so the generated
Best,_worst_and_average_case
Online genealogy platform
the users' email addresses and hashed passwords to be compromised. MyHeritage stated that information about family trees, DNA profiles, and credit card
MyHeritage
Data structure used by a language translator such as a compiler or interpreter
quickly as possible. Hash tables are usually used to organise a symbol table, where the keyword or identifier is 'hashed' to produce an array subscript. Collisions
Symbol_table
Hardware that translates virtual addresses to physical addresses
registers allows multiple processes to share the same hash table. The 52-bit address is hashed, then used as an index into the off-chip table. There,
Memory_management_unit
Feature in the C++ programming language
using TreeMap = std::map<K, V>; template <typename K, typename V> using HashMap = std::unordered_map<K, V>; // Defining StringHashMap<K> = HashMap<K,
Template_(C++)
Data structure for query optimization in databases
tables that are parts of the cluster. A cluster can be keyed with a B-tree index or a hash table. The data block where the table record is stored is defined
Database_index
Finite, ordered collection of items
implementations, however, sets are implemented using self-balancing binary search trees or hash tables, rather than a list. Lists also form the basis for other abstract
List_(abstract_data_type)
the bins are arranged in a 2D array. All the candidates are represented also as 2D arrays. The size of a candidate's array is the number of bins it intersects
Bin_(computational_geometry)
Algorithm that employs a degree of randomness as part of its logic or procedure
in an array of n elements. Input: An array of n≥2 elements, in which half are ‘a’s and the other half are ‘b’s. Output: Find an ‘a’ in the array. We give
Randomized_algorithm
Class templates in the C++ programming language
class templates in the standard library that implement ordered associative arrays. Being templates, they can be used to store arbitrary elements, such as
Associative_containers_(C++)
Data structure for storing integers from a bounded domain
Like van Emde Boas trees, x-fast tries support the operations of an ordered associative array. This includes the usual associative array operations, along
X-fast_trie
Syntactic construct for creating a list based on existing lists
as follows: # regular array comprehension a::Vector{Tuple{Int, Int}} = [(x, y) for x in 1:5 for y in 3:5] # parallel/zipped array comprehension b::Vector{Tuple{Int
List_comprehension
Data structure in computer science
Emde Boas trees and x-fast tries, y-fast tries support the operations of an ordered associative array. This includes the usual associative array operations
Y-fast_trie
Overview of computer engineering topics
description language Test bench Ball grid array Head in pillow (metallurgy) Pad cratering Land grid array Computer architecture Harvard architecture
Computer engineering compendium
Computer_engineering_compendium
I/O-efficient algorithm regardless of cache size
set". For both execution time and memory usage, the hash table was best, followed by the B-tree, with the Bender set the worst in all cases. The memory
Cache-oblivious_algorithm
HASHED ARRAY-TREE
HASHED ARRAY-TREE
Boy/Male
French, Hindu, Indian
Sea
Male
English
Variant spelling of English Aaron, ARRAN means "light-bringer."
Surname or Lastname
English and French
English and French : habitational name from the city of Arras in Artois, northern France, or one of the other places in France so named.Scottish : habitational name from Airhouse, a locality in Channelkirk, Berwickshire.English : habitational name from a place called Arras in East Yorkshire, earlier spelled Erghes, from the plural of Old Norse erg ‘hut’, ‘shelter’.German : metonymic occupational name for a cloth merchant, from a type of woolen cloth for which the city of Arras in Flanders was famous in the Middle Ages. This name is also established in Mexico.
Boy/Male
Australian, Irish
From Cashel
Biblical
Jashen, ancient; sleeping
Male
English
Anglicized form of Hebrew Howshea, HOSHEA means "salvation."Â
Boy/Male
Arabic, Australian, German, Muslim
Having the True Faith; Guide to the Light Path; Integrity; Brave; Righteous; Mature; Pious One; Rightly Advised; Variant of Rashid
Girl/Female
Gujarati, Hindu, Indian, Kannada, Marathi, Sanskrit, Sindhi, Telugu
Array of Clouds
Boy/Male
Hebrew
Lofty; exalted; high mountain.
Male
Yiddish
Yiddish form of Hebrew Yechezqel, HASKEL means "God will strengthen."
Boy/Male
Indian, Parsi
Strong
Girl/Female
Hindu
Array of clouds
Male
Iranian/Persian
Variant spelling of Persian Jamshid, possibly JAMSHED means "shining river."
Surname or Lastname
English
English : possibly a hypercorrected form of Asher.
Boy/Male
Indian
One who is honored, Exalted
Girl/Female
Tamil
Meghamala | மேகமாலா
Array of clouds
Meghamala | மேகமாலா
Male
Yiddish
(מַ×ש×ֶעל) Yiddish form of Hebrew Asher, MASHEL means "happy."
Girl/Female
Tamil
Array of clouds
Girl/Female
Tamil
Kadambini | காதமà¯à®ªà®¿à®¨à¯€
An array of clouds
Kadambini | காதமà¯à®ªà®¿à®¨à¯€
Girl/Female
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Sanskrit, Sindhi, Tamil, Telugu
An Array of Clouds
HASHED ARRAY-TREE
HASHED ARRAY-TREE
Girl/Female
Portuguese American
Form of the Greek Catherine meaning pure.
Girl/Female
Hindu
A bunch of gems
Boy/Male
Finnish, German, Greek, Swedish
Universe; Order; Harmony; Decency; Beauty
Girl/Female
Hindu, Indian, Marathi
A Friend; A Wife
Male
English
English occupational surname transferred to forename use, CARVER means "carver" of wood or stone.
Female
English
Pet form of English Jennifer, JENNY means "white and smooth."
Boy/Male
Hindu
Born after Rama i.e. Lakshman (Younger brother of Rama)
Surname or Lastname
English
English : perhaps a respelling of Salt.
Boy/Male
Celebrity, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Sanskrit, Tamil, Telugu, Traditional
Flute; Lord Krishna; The King of the Earth
Biblical
that bulrush (the papyrus),fertile in sycamoresa place fertile in sycamores
HASHED ARRAY-TREE
HASHED ARRAY-TREE
HASHED ARRAY-TREE
HASHED ARRAY-TREE
HASHED ARRAY-TREE
p. pr. & vb. n.
of Array
a.
Imperfectly hatched; as, half-hatched eggs.
v. t.
To dress up; to array; accouter.
v. t.
To furnish with an arras.
v. t.
To adorn with trapping; to array.
a.
Passed along; handed down; transmitted.
a.
Open-handed; liberal.
v. i.
To spread out in array.
n.
Array; order; arrangement; dress.
n.
Any outer covering; array; garb.
n.
Order; a regular and imposing arrangement; disposition in regular lines; hence, order of battle; as, drawn up in battle array.
a.
Close-handed; close-fisted; covetous; avaricious.
imp. & p. p.
of Array
n.
Figure; dress; array.
a.
In composition: Having (such) hair; as, red-haired.
n.
That which dashes or agitates; as, the dasher of a churn.
v. t.
To array.
a.
Left-handed; hence, unlucky.
v. t.
To clothe; array; deck.
n.
To dress; to clothe; to array.