An array is a data structure used to store a collection of items in a single location. It usually consists of elements which all have the same data type and are accessed using an index number. Arrays allow for fast retrieval and manipulation of stored data, as it allows for efficient searching and sorting algorithms to be applied.

An array is a data structure that stores a collection of items. These items are usually related in some way, and it allows for elements at specific indexes to be retrieved or manipulated efficiently. It is typically composed of multiple elements that are accessed with an index value. In computer science, an array is often used to store numeric or text information, but it can be used to store any type of data.