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  1. Sep 21, 2023 · Approach: Reversing can be done with the help of reverse () function provided in STL. The Time complexity of the reverse () is O (n) where n is the length of the string. Syntax: reverse(start_iterator, end_iterator); Example: CPP. // using reverse() in STL. #include <bits/stdc++.h> using namespace std; int main() {

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      reverse () is a predefined function in header file...

  2. Feb 17, 2017 · Is there a built-in vector function in C++ to reverse a vector in place? Or do you just have to do it manually?

    • Exceptions
    • Notes
    • Defect Reports

    The overload with a template parameter named ExecutionPolicyreports errors as follows: 1. If execution of a function invoked as part of the algorithm throws an exception and ExecutionPolicy is one of the standard policies, std::terminate is called. For any other ExecutionPolicy, the behavior is implementation-defined. 2. If the algorithm fails to a...

    Implementations (e.g. MSVC STL) may enable vectorization when the iterator type satisfies LegacyContiguousIterator and swapping its value type calls neither non-trivial special member function nor ADL-found swap.

    The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

  3. Feb 3, 2023 · reverse () is a predefined function in header file algorithm. It is defined as a template in the above-mentioned header file. It reverses the order of the elements in the range [first, last) of any container. The time complexity is O (n).

  4. Jul 17, 2023 · One of the basic approaches to reverse a vector in C++ is by using a loop to swap elements. The idea is to iterate over the vector and swap the first element with the last, the second element with the second to last, and so on, until reaching the middle of the vector.

  5. In this article, we take a look at different ways to reverse vector in C++ Standard Template Library (STL) along with reversing a 2D vector. Table of contents: Introduction to Vector; C++ vector STL function std::reverse() By swapping the elements; By using reverse iterators; Consider the case of a 2D vector; Implementation - reversing 2D ...

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  7. Reverse range. Reverses the order of the elements in the range [first,last). The function calls iter_swap to swap the elements to their new locations. The behavior of this function template is equivalent to: 1.