How to reverse a Vector using STL in C++?

In this tutorial, we will be discussing a program to understand how to reverse a vector using STL in C++.

For reversing a given vector we will be using the reverse() function from the STL library in C++.

Example

#include <bits/stdc++.h>
using namespace std;
int main(){
   //collecting the vector
   vector<int> a = { 1, 45, 54, 71, 76, 12 };
   cout << "Vector: ";
   for (int i = 0; i < a.size(); i++)
      cout << a[i] << " ";
   cout << endl;
   //reversing the vector
   reverse(a.begin(), a.end());
   cout << "Reversed Vector: ";
   for (int i = 0; i < a.size(); i++)
      cout << a[i] << " ";
   cout << endl;
   return 0;
}

Output

Vector: 1 45 54 71 76 12
Reversed Vector: 12 76 71 54 45 1