c++ 11 list转set「建议收藏」

list<int>	li;
	for (int i = 0; i < 100; i++){ 
   
		li.push_back(i);
	}
	for (int i = 0; i < 100; i++){ 
   
		li.push_back(i);
	}
	unordered_set<int>	uset(li.begin(), li.end()); //用list去初始化set
	cout << uset.size() << endl;
	for (auto i : uset){ 
   
		cout << i << ",";
	}