we have used swap functions in swapping of elements without making our own swap function. Can we use swap function directly when we code on hacker blocks or we need to write something ?
Is Swap function inbuilt in C++?
yes you can use swap function directly
it is an inbulit function present on iostream
so NO need to add extra header file
if you want you can make you own as well
void swap (int&a,int &b){
int temp=a;
a=b;
b=temp;
}