41 Lecture - STANDARD TEMPLATE LIBRARY

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41 Lecture

CS304

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STANDARD TEMPLATE LIBRARY

The Standard Template Library (STL) is a library of generic algorithms, data structures, and iterators that are part of the C++ standard library. It provides a set of reusable and interchangeable components that can be used to implement complex


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  1. What is the purpose of the Standard Template Library (STL) in C++? a) To provide a library of generic algorithms, data structures, and iterators b) To provide a library of graphics functions c) To provide a library of mathematical functions d) To provide a library of input/output functions Answer: a Which of the following is a container class in STL? a) Vector b) Set c) List d) All of the above Answer: d Which of the following is not a type of iterator in STL? a) Forward iterator b) Reverse iterator c) Bidirectional iterator d) Parallel iterator Answer: d What is the complexity of finding an element in a set in STL? a) O(1) b) O(log n) c) O(n) d) O(n^2) Answer: b Which algorithm in STL is used to sort a range of elements in ascending order? a) sort b) reverse c) merge d) unique Answer: a Which container class in STL stores unique elements in sorted order? a) Vector b) Map c) Set d) Queue Answer: c What is the difference between a stack and a queue in STL? a) A stack is a LIFO structure, while a queue is a FIFO structure. b) A stack is a FIFO structure, while a queue is a LIFO structure. c) Both are LIFO structures. d) Both are FIFO structures. Answer: a Which algorithm in STL is used to copy a range of elements from one container to another? a) find b) copy c) sort d) replace Answer: b Which of the following is not a header file in STL? a) <vector> b) <set> c) <list> d) <iostream> Answer: d Which container class in STL is used to implement a priority queue? a) Map b) Queue c) Stack d) Heap Answer: d



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  1. What is the Standard Template Library (STL) in C++? Answer: The Standard Template Library is a library of generic algorithms, data structures, and iterators that are part of the C++ standard library. What is an iterator in STL? Answer: An iterator is a type of object that points to an element in a container in STL and allows us to access and modify its value. What are the advantages of using STL in C++ programming? Answer: The advantages of using STL in C++ programming are that it provides a set of reusable and interchangeable components, reduces development time, improves code quality, and makes the code more maintainable. What is a container in STL? Answer: A container is a class that stores and manages a collection of objects in STL, such as vectors, lists, sets, and maps. What is the difference between a vector and a list in STL? Answer: A vector is a sequence container that stores objects in contiguous memory, while a list is a doubly linked list container that stores objects in non-contiguous memory. What is an algorithm in STL? Answer: An algorithm is a set of operations that can be performed on a range of elements in a container in STL, such as sorting, searching, and copying. What is a template in STL? Answer: A template is a C++ feature that allows us to write generic code that works with different data types, and it is used extensively in STL to provide a generic framework for algorithms and containers. What is the difference between a stack and a queue in STL? Answer: A stack is a container that provides LIFO (last-in-first-out) access to elements, while a queue is a container that provides FIFO (first-in-first-out) access to elements. What is the complexity of finding an element in a map in STL? Answer: The complexity of finding an element in a map in STL is O(log n), where n is the number of elements in the map. What is the difference between a set and a multiset in STL? Answer: A set is a container that stores unique elements in sorted order, while a multiset is a container that stores multiple copies of the same element in sorted order.

The Standard Template Library (STL) is a library of generic algorithms, data structures, and iterators that are part of the C++ standard library. It provides a set of reusable and interchangeable components that make programming faster, easier, and more efficient. The STL is based on the concept of templates, which allow the library to be used with any data type. The STL includes a variety of containers, such as vectors, lists, sets, maps, and queues, which store and manage collections of objects. Each container has its own characteristics, such as the ability to store unique or duplicate elements, the ability to insert or remove elements at specific positions, and the ability to provide fast access to elements. The STL also includes a wide range of algorithms, such as sorting, searching, copying, and transforming, which can be applied to the elements stored in the containers. These algorithms are designed to be generic, meaning they work with any container that provides the required iterator support. Iterators are a fundamental part of the STL and allow us to access and modify the elements in a container. They provide a general way to traverse the elements in a container, regardless of its internal structure or implementation. One of the benefits of using the STL is that it promotes code reuse and reduces development time. By using generic algorithms and containers, we can write code that works with different data types and can be easily adapted to new requirements. Overall, the STL is an essential part of C++ programming, and understanding its components and usage is crucial for any programmer looking to write efficient and reusable code.

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