reverse in stl c++ code example

Example 1: string reverse stl

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

Example 2: c++ reverse part of vector

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