What Do Mean by Data Structure?


Angela Bailey

A data structure is a way of organizing and storing data in a computer so that it can be used efficiently. It provides a means to manage and manipulate data, enabling faster access, insertion, deletion, and search operations.

Types of Data Structures

Data structures can be classified into two broad categories: linear data structures and non-linear data structures.

Linear Data Structures

Linear data structures are those in which the elements are arranged in a sequential manner. Some commonly used linear data structures include:

  • Arrays: An array is a collection of elements of the same type stored in contiguous memory locations. Elements in an array can be accessed using their index.
  • Linked Lists: A linked list is a collection of nodes where each node contains both the data and a reference to the next node.

    Linked lists allow dynamic memory allocation.

  • Stacks: A stack is an abstract data type that follows the LIFO (Last In, First Out) principle. Elements are added or removed from one end called the top.
  • Queues: A queue is an abstract data type that follows the FIFO (First In, First Out) principle. Elements are added at one end called rear and removed from the other end called front.

Non-linear Data Structures

Non-linear data structures do not follow a sequential arrangement of elements. Some common non-linear data structures include:

  • Trees:Trees are hierarchical structures composed of nodes connected by edges. They are widely used for representing hierarchical relationships like file systems or organization charts.
  • Graphs:Graphs consist of a set of vertices and edges connecting the vertices.

    They are suitable for representing complex relationships between objects or entities.

  • Hash Tables:A hash table is a data structure that uses a hash function to map keys to values. It provides fast access and insertion of key-value pairs.

Data structures play a crucial role in computer science and programming. By choosing the appropriate data structure for a specific task, you can optimize the performance of your algorithms and improve overall efficiency.

Understanding different types of data structures and their characteristics is essential for every programmer. Make sure to explore each type in detail and practice implementing them in your code.

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