reverse

Description : It reverses the order of the elements in the range [first, last) of any container.

Example :

 int main() { 
          int i; 
          std::vector<int> v1{1,2,3,4};
          
          std::reverse(v1.begin(),v1.end());

          for (auto value : v1) {
              std::cout << value << " ";
          }
          return 0; 
      } 

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