How to get max() element from List in Guava

Question

Let\'s say we have a Collection of Items:

class Item {
    public String title;
    public int price;
}

List list = getListOfItems();
         


        

Answer 1

Ordering o = new Ordering() {
    @Override
    public int compare(Item left, Item right) {
        return Ints.compare(left.price, right.price);
    }
};
return o.max(list);

It's as efficient as it can be: it iterates through the items of the list, and returns the first of the Items having the maximum price: O(n).