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    Data Structures are specialized ways of organizing and storing data so it can be accessed and modified efficiently. They are the foundation for building efficient software, as the right structure can drastically reduce time and space complexity. Common categories include:

    • Linear structures: Arrays, Linked Lists, Stacks, Queues.

    • Non-linear structures: Trees, Graphs, Tries, Heaps.

    Algorithms are step-by-step procedures for solving problems or performing computations. They operate on data structures to manipulate, search, sort, or optimize data. Efficiency is measured using time complexity and space complexity, often expressed in Big O notation.

    Example: Stack Implementation in Python

    class Stack:
    def __init__(self):
    self.items = []

    def push(self, item):
    self.items.append(item) # O(1)

    def pop(self):
    return self.items.pop() if not self.is_empty() else None # O(1)

    def peek(self):
    return self.items[-1] if not self.is_empty() else None # O(1)

    def is_empty(self):
    return len(self.items) == 0

    def size(self):
    return len(self.items)

    # Usage
    stack = Stack()
    stack.push(10)
    stack.push(20)
    print(stack.pop()) # 20
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    DSA Introduction - W3Schools

    Data Structures is about how data can be stored in different structures. Algorithms is about ho…

    W3School
    What is a data structure?
    A data structure is not only used for organising the data. It is also used for processing, retrieving, and storing data. There are different basic and advanced types of data structures that are used in almost every program or software system that has been developed. So we must have good knowledge of data structures.
    geeksforgeeks.org
    C# Corner
    https://www.c-sharpcorner.com/article/what-is-the-difference-between …
    What is the Difference Between Data Structures and Algorithms? - C# Corner
  1. GeeksForGeeks
    https://www.geeksforgeeks.org › dsa › introduction-to-data-structures

    Introduction to Data Structures - GeeksforGeeks

    Jul 12, 2025 · There are different basic and advanced types of data structures that are used in almost every program or software system that has been developed. So we must have good knowledge of …

    • DSA stands for Data Structures and Algorithms. Data structures manage how data is stored and accessed. Algorithms focus on processing this data. Exampl…

    See results only from geeksforgeeks.org
  2. W3School
    https://www.w3schools.com › dsa › dsa_intro.php

    DSA Introduction - W3Schools

    Data Structures is about how data can be stored in different structures. Algorithms is about how to solve different problems, often by searching through and …

  3. Engineering LibreTexts
    https://eng.libretexts.org › Bookshelves › Computer...

    3.1: Introduction to Data Structures and Algorithms

    For many real-world problems, the ability to design an algorithm depends on how the data is represented. A data structure is a complex data type with two equally …

  5. C# Corner
    https://www.c-sharpcorner.com › article › what-is-the...

    What is the Difference Between Data Structures and Algorithms? - C

    Sep 24, 2025 · Discover the difference between data structures and algorithms with clear definitions, detailed examples, comparison tables, and real-world use cases. Learn why both are essential for …

  6. University of Vermont
    https://www.uvm.edu › ~cbcafier › content

    Introduction to data structures and algorithms – Clayton …

    Jan 5, 2025 · The textbook gives these definitions: “An algorithm is a recipe for performing a certain task.” and “a data structure is a way of arranging data to …

  7. student-notes.net
    https://www.student-notes.net › data-structures-and...

    Data Structures and Algorithms: Definitions and Analysis

    Posted on Nov 18, 2025 in Computers. A data structure is a specialized way of organizing, storing, and managing data in a computer to enable efficient access, manipulation, and operations. It defines how …

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  9. Computer and Information Science
    https://www.cis.upenn.edu › current › lectures › notes.pdf
    [PDF]

    CIS 1210: Data Structures and Algorithms

    In the execution of the algorithm that produced S, the last proposal of m was, by definition, to w. Now we ask: Did m propose to w0 at some earlier point in this execution?

  10. codelucky.com
    https://codelucky.com › algorithm-vs-data-structure

    Algorithm vs Data Structure: Understanding the Key …

    Sep 5, 2025 · When learning programming and computer science, one of the biggest confusions beginners often face is distinguishing between Algorithms …

  11. GeeksForGeeks
    https://www.geeksforgeeks.org › dsa › dsa-tutorial...

    DSA Tutorial - GeeksforGeeks

    Dec 25, 2025 · DSA stands for Data Structures and Algorithms. Data structures manage how data is stored and accessed. Algorithms focus on processing this …

    Missing:
    • Definition
    Must include:
  12. hello-algo.com
    https://www.hello-algo.com › en › chapter_introduction › ...

    1.2 What Is an Algorithm - Hello Algo

    Data structures provide algorithms with structured storage of data and methods for operating on data. Algorithms breathe life into data structures. Data structures …

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