What are the types of Data Structure?

Data structures can be broadly categorized into two main types: primitive data structures and composite data structures.

Primitive Data Structures: These are the most basic data structures that directly operate upon the machine instructions. They are the foundation for creating more complex data structures. Common primitive data structures include:

  • Integer: Represents whole numbers (e.g., 1, 100, -42).
  • Float: Represents floating-point numbers (e.g., 3.14, -0.5).
  • Character: Represents single characters (e.g., 'A', 'b', '1').
  • Boolean: Represents true or false values.

Composite Data Structures: These are data structures that are composed of primitive data types and are used to organize and manage collections of data in a more complex way. Common composite data structures include:

  • Arrays: A collection of elements, each identified by an index or key.
  • Linked Lists: A collection of nodes, where each node contains data and a reference to the next node.
  • Stacks: A Last In, First Out (LIFO) structure for data storage.
  • Queues: A First In, First Out (FIFO) structure for data storage.
  • Trees: A hierarchical structure with nodes, each having a parent and zero or more children.
  • Graphs: A collection of nodes and edges representing relationships between entities.
  • Hash Tables: A data structure that uses a hash function to map data to an index for efficient retrieval.
  • Heaps: A specialized tree-based structure that satisfies the heap property (either max heap or min heap).
  • Trie: A tree-like structure used to store a dynamic set or associative array where keys are usually strings.

Abstract Data Types (ADTs):

These are high-level descriptions of data structures that define the operations that can be performed on the data, without specifying the implementation details. Common abstract data types include:

  • Stack ADT: Supports operations like push and pop.
  • Queue ADT: Supports operations like enqueue and dequeue.
  • List ADT: Supports operations for manipulating lists of elements.
  • Set ADT: Represents a collection of unique elements.
  • Map ADT: Represents a collection of key-value pairs.

Understanding the characteristics, advantages, and use cases of these data structures is essential for designing efficient algorithms and solving computational problems in various domains, including software development, database management, and artificial intelligence.