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A data structure known as a hash table.. In computer science, a data structure is a data organization and storage format that is usually chosen for efficient access to data. [1] [2] [3] More precisely, a data structure is a collection of data values, the relationships among them, and the functions or operations that can be applied to the data, [4] i.e., it is an algebraic structure about data.
A class in C++ is a user-defined type or data structure declared with any of the keywords class, struct or union (the first two are collectively referred to as non-union classes) that has data and functions (also called member variables and member functions) as its members whose access is governed by the three access specifiers private, protected or public.
This is a list of well-known data structures. For a wider list of terms, see list of terms relating to algorithms and data structures. For a comparison of running times for a subset of this list see comparison of data structures.
[13] [14] All CS50x course materials are free and there is no fee to complete the course, though various verified certificates are available for a fee. [15] As of 2024, CS50x teaches the languages C, Python, SQL, HTML, CSS, and JavaScript. It also teaches fundamental computer science concepts including data structures and the Flask framework. [13]
Union types (C/C++ language) Permits storing types of different data sizes; it is hard to ensure which type is stored in a union upon retrieval however and should be carefully followed. Type conversion Templates or Generics Ensures reusability and type safety; may be thought as a reverse inheritance.
Encapsulation is the hiding of information to ensure that data structures and operators are used as intended and to make the usage model more obvious to the developer. C++ provides the ability to define classes and functions as its primary encapsulation mechanisms.
A friend class in C++ can access the private and protected members of the class in which it is declared as a friend. [1] A significant use of a friend class is for a part of a data structure, represented by a class, to provide access to the main class representing that data structure.
By using pointers, you can access and modify data located in memory, pass data efficiently between functions, and create dynamic data structures like linked lists, trees, and graphs. In simpler terms, you can think of a pointer as an arrow that points to a specific spot in a computer's memory, allowing you to interact with the data stored at ...
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