Editing Array (data structure) (section)

==Dimension==
The ''dimension'' of an array is the number of indices needed to select an element. Thus, if the array is seen as a function on a set of possible index combinations, it is the dimension of the space of which its domain is a discrete subset. Thus a one-dimensional array is a list of data, a two-dimensional array is a rectangle of data,<ref>{{Cite web|title=Two-Dimensional Arrays \ Processing.org|url=https://processing.org/tutorials/2darray/|website=processing.org|access-date=2020-05-01}}</ref> a three-dimensional array a block of data, etc.

This should not be confused with the dimension of the set of all matrices with a given domain, that is, the number of elements in the array. For example, an array with 5 rows and 4 columns is two-dimensional, but such matrices form a 20-dimensional space. Similarly, a three-dimensional vector can be represented by a one-dimensional array of size three.