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In computer science, a dynamic array, growable array, resizable array, dynamic table, mutable array, or array list is a random access, variable-size list data structure that allows elements to be added or removed. It is supplied with standard libraries in many modern mainstream programming languages.
A list may contain the same value more than once, and each occurrence is considered a distinct item. A singly-linked list structure, implementing a list with three integer elements. The term list is also used for several concrete data structures that can be used to implement abstract lists, especially linked lists and arrays.
The following list contains syntax examples of how a range of element of an array can be accessed. In the following table: first – the index of the first element in the slice; last – the index of the last element in the slice; end – one more than the index of last element in the slice; len – the length of the slice (= end - first)
The collided items are chained together through a single linked list, which can be traversed to access the item with a unique search key. [ 6 ] : 464 Collision resolution through chaining with linked list is a common method of implementation of hash tables.
Its primary objective is to reduce the amount of element copying due to automatic array resizing operations, and to improve memory usage patterns. Whereas simple dynamic arrays based on geometric expansion waste linear (Ω(n)) space, where n is the number of elements in the array, hashed array trees waste only order O(√ n) storage space. An ...
Resizing [ edit ] Some languages allow dynamic arrays (also called resizable, growable, or extensible): array variables whose index ranges may be expanded at any time after creation, without changing the values of its current elements.
C# is a programming language. The following is a list of software programmed in it: Banshee, a cross-platform open-source media player. Beagle, a search system for Linux and other Unix-like systems. Colectica, a suite of programs for use in managing official statistics and statistical surveys using open standards.
The following C# fragment declares a variable-length array of integers. Before C# version 7.2, a pointer to the array is required, requiring an "unsafe" context. The "unsafe" keyword requires an assembly containing this code to be marked as unsafe.