# Set Abstract Data Type

A Set Abstract Data Type is an ADT to define set data structures that can represent abstract sets.

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**Counter-Example(s):**- a List ADT.

**See:**Array Data Type, Collection ADT.

## References

### 2015

- (Wikipedia, 2015) ⇒ http://en.wikipedia.org/wiki/set_(abstract_data_type) Retrieved:2015-2-13.
- In computer science, a
**set**is an abstract data type that can store certain values, without any particular order, and no repeated values. It is a computer implementation of the mathematical concept of a finite set. Unlike most other collection types, rather than retrieving a specific element from a set, one typically tests a value for membership in a set.Some set data structures are designed for static

**or**frozen sets that do not change after they are constructed. Static sets allow only query operations on their elements — such as checking whether a given value is in the set, or enumerating the values in some arbitrary order. Other variants, called**dynamic**or**mutable sets**, allow also the insertion and deletion of elements from the set.An abstract data structure is a collection, or aggregate, of data. The data may be booleans, numbers, characters, or other data structures. If one considers the structure yielded by packagingor indexing,there are four basic data structures:

- In this view, the contents of a set are a bunch, and isolated data items are elementary bunches (elements). Whereas sets
*contain*elements, bunches consist of*elements.**Further structuring may be achieved by considering the multiplicity of elements (sets become multisets, bunches become hyperbunches) or their homogeneity (a record is a set of fields, not necessarily all of the same type).*

- In computer science, a