Question

How to swap between first and second value of a list in C++

Answer 1

#include <iostream>
#include <list>

using std::list;
using std::cout;
using std::endl;

void print(const list<int> &lst)
{
	for (auto element : lst) {
		cout << element << ' ';
	}
	cout << endl;
}

int main()
{
	list<int> lst{ 1, 3, 8, 23, 88, 12, 99, 7 };

	iter_swap(lst.begin(), next(lst.begin()));

	print(lst);

}


/*
run:

3 1 8 23 88 12 99 7

*/

 

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