reverse in stl code example

Example 1: c++ reverse vector

#include <bits/stdc++.h> // Vector
#include <algorithm>  // Reverse 
using namespace std;

int main()
{
    vector<int> nums{4,1,2,1,2};

    reverse(nums.begin(), nums.end());
    return 0;
}

Example 2: string reverse stl

int main() { 
    string str = "foobarbaz";
    reverse(str.begin(), str.end()); 
    cout << str; // prints "zabraboof"
    return 0; 
}

Example 3: c++ reverse part of vector

//Reverse vector partially (from index x to index y)
reverse(v.begin()+x, v.begin()+y+1);

Example 4: std::reverse

std::vector<int> v{1,2,3};
    std::reverse(std::begin(v), std::end(v));

Example 5: reverse a vector

vector<int> a = {1,2,3,4,5,6};
reverse(a.begin(), a.end());

Example 6: stl function to reverse an array

reverse(ar , ar + n) ; //ar is the array , n is the size