// https://www.geeksforgeeks.org/set-in-cpp-stl/

// Things to discuss
// How to l = l + 4
// How to l = 4 + l;
// How to l = l - 4;
// How to l = 4 - l;
// WHat the heck is l < 4
// Remember l might be null

// Due:  Friday before finals week



#include <iostream>
#include <set>
using namespace std;

ostream &operator<<(ostream &os, set<int>&s)
{
   for (auto itr = s.begin(); itr != s.end(); itr++) {
        cout << *itr << " ";
    }
    return os;
}

void compare(set<int> &s1, LinkedList &l1)
{
    cout << "These should be the same" << endl;
    cout << s1 << endl;
    cout << l1 << endl;
}
int main()
{
    cout << "==========\n\n\n\n\n\n\n"  << endl;
    set<int> s;
    LinkedList l;
    s.insert(3);
    l = l + 3;
    compare(s, l);

    s.insert(13);
    l = 13 + l;
    compare(s, l);


    s.insert(1); s.insert(2); s.insert(3); s.insert(4);
    l = l + 1 + 2 + 3 + 4;
    compare(s, l);


    s.erase(4);
    l = l - 4;
    compare(s, l);

    s.erase(1);
    l = l - 1;
    compare(s, l);

    s.erase(9999);
    LinkedList l2 = l - 9999;
    compare(s, l);

    if (l < 14)
	cout << "Good.  L has nothing greater than 14\n";
    else
	cout << "Bad answer\n";
    if (l < 1)
	cout << "Bad answer\n";
    else
	cout << "Good.  L does have something greater than 1\n";
}