Question

How to inset numbers into a list from both sides (begin and end) in C++

Answer 1

#include <iostream>
#include <list>

int main()
{
	std::list<int> lst;

	for (int i = 1; i <= 6; ++i) {
		lst.push_front(i);
		lst.push_back(i);
	}

	for (auto elem : lst) {
		std::cout << elem << ' ';
	}
	std::cout << std::endl;
	
	return 0;
}

/*
run:

6 5 4 3 2 1 1 2 3 4 5 6

*/

 

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