public class CollectionClient {

    public static void main(String[] args) {
       Set<String> s = new HashSet<String>();
       Set<Integer> nums = new TreeSet<Integer>();
       List<String> list = new LinkedList<String>();
       Queue<String> q = new LinkedList<String>();
       list.add("Hunter");
    }
    
    /*
    public static int sum(List<Integer> list) {
        int sum = 0;
        for (int n : list) {
            sum += n;
        }
        return sum;
    }
    
    public static int sum(LinkedList<Integer> list) {
        int sum = 0;
        for (int n : list) {
            sum += n;
        }
        return sum;
    }
    */

}