REVERSE()

This function reverses the order of elements within a specified range, typically defined by a container’s begin() and end() iterators. This function operates in place, meaning it modifies the original container without creating a copy. It requires bidirectional iterators, making it compatible with containers like std::vector, std::list, and arrays but not std::forward_list. std::reverse() is efficient and easy to use, offering a quick way to flip the order of characters in a string or elements in a container without writing a manual loop. To reverse strings specifically, the <string> header is also commonly included. Additionally, you can reverse only a portion of a container by specifying a custom range using iterators, such as specific start and end positions.

//SYNTAX
reverse(startIterator, endIterator);
// Reverses elements from startIterator up to (but not including) endIterator

// Example: Partial reverse (first 5 characters)
reverse(str.begin(), str.begin() + 5);

// Example: Reverse from 3rd position to end
reverse(str.begin() + 2, str.end());

#include <iostream>     // For input and output
#include <string>       //required when manipulating string objects
#include <algorithm>    // For reverse()
using namespace std;

int main() {
    string text = "codechef";               // Original string
    reverse(text.begin(), text.end());      // Reverse the string
    cout << "Reversed Text: " << text << endl;  // Display result
    return 0;  // End of program
}

 OUTPUT:
  Reversed Text: fehcedoc