From Wikipedia, the free encyclopedia

An array is a systematic arrangement of similar objects, usually in rows and columns.

The little push-buttons on the upper part of the right electronic device are arranged in an array with 3 columns and 4 rows. The two devices themselves form a very simple array of 2 columns and 1 row.

Things called an array include:




A telescope array, also called astronomical interferometer.


  • Various kinds of multiple biological arrays called microarrays
  • Visual feature array, a model for the visual cortex

Computer science[edit]

Generally, a collection of same type data items that can be selected by indices computed at run-time, including:

  • Array (data structure), an arrangement of items at equally spaced addresses in computer memory
  • Array (data type), used in a programming language to specify a variable that can be 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 of the above, such as:

or various related concepts:

  • Array programming, using matrix algebra notation in programs (not the same as array processing)
  • Array slicing, the extraction of sub-arrays of an array

or also:

Mathematics and statistics[edit]



Other technologies[edit]