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cpp-iterator

56 posts

How to Iterate Through a Vector in C++?

Last Updated: 23 July 2025

Iterating or traversing a vector means accessing each element of the vector sequentially. In this article, we will learn different methods to iterate over a vector in C++....read more

Iterators Operations in C++

Last Updated: 29 June 2026

Iterator operations in C++ provide various ways to work with elements stored in STL containers. These operations make iterators powerful tools for traversing, accessing, a...read more

string::rbegin() and string::rend() in C++

Last Updated: 23 July 2025

The std::string::rbegin() and std::string::rend() functions in C++ are used to fetch the reverse iterators to the string. They are the member function of std::string and a...read more

Why are Standard Iterator Ranges [begin, end) Instead of [begin, end]?

Last Updated: 23 July 2025

In C++, the Standard Template Library (STL) uses a half-open range convention [begin, end) for iterator ranges. This means the range includes the begin iterator but exclud...read more

Iteration Over std::vector: Unsigned vs Signed Index Variable

Last Updated: 23 July 2025

When we iterate over a std::vector in C++, we need to choose the right type for the index variable to maintain both the correctness and clarity of our code. A common quest...read more

Why Use Iterators Instead of Array Indices?

Last Updated: 23 July 2025

In C++, both iterators and array indices are used to access and manipulate elements in a container, such as arrays, vectors, and lists. However, one common question that a...read more

How to Implement Iterator for a Doubly Linked List in C++?

Last Updated: 23 July 2025

In C++, iterators are used to access elements of a container sequentially without exposing the underlying representation. When working with data structures like a doubly l...read more

How to Traverse Vector using const_iterator in C++?

Last Updated: 23 July 2025

In C++, a const_iterator is a type of iterator that points to constant content means by using a const_iterator, we can read from but cannot write to the element it points ...read more

How to Traverse a List with reverse_iterator in C++?

Last Updated: 23 July 2025

In C++, lists arecontainers that allow users to store data in non-contiguous memory locations.List provides reverse iterators that make it easy to traverse the list in rev...read more

How to Traverse a List with const_iterator in C++?

Last Updated: 23 July 2025

In C++, a list is a container used to store data in non-contiguous memory locations. It also provides a constant iterator that provides the constant reference to its eleme...read more

How to Find Last Occurrence of an Element in a Deque in C++?

Last Updated: 23 July 2025

In C++, deques also known as double-ended queues are sequence containers that allow the users to insert and delete elements from both ends efficiently. In this article, we...read more

How to Access First Element in a Vector Using Iterator in C++?

Last Updated: 23 July 2025

In C++, vectors are containers similar to arrays but unlike arrays, vectors can resize themselves during the runtime. These vectors provide iterators to access their eleme...read more

How to Traverse Vector Using const_reverse_iterator in C++?

Last Updated: 23 July 2025

In C++, a vector can be traversed in reverse order using a const_reverse_iterator. A const_reverse_iterator is a type of iterator that points to the last element in the co...read more

How to Use a reverse_Iterator with a Map in C++?

Last Updated: 23 July 2025

In C++, a reverse_iterator is a type of iterator that points to elements in a container in the reverse order. This means that using a reverse_iterator, you can traverse a ...read more

How to Use const_iterator with a Map in C++?

Last Updated: 23 July 2025

In C++, a const_iterator is a type of iterator that points to constant content. This means that using a const_iterator, you can read from but not write to the element it p...read more

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