import java.util.ArrayList; import java.util.List; public class Ch2 { public static void main(String[] args) { ArrayList list1 = new ArrayList<>(List.of(2,5,9)); ArrayList list2 = new ArrayList<>(List.of(7,7,7,7,7,7,7)); System.out.println(floor_sum(list1)); System.out.println(floor_sum(list2)); } private static int floor_sum(List list) { int sum = 0; for(int i = 0; i < list.size(); ++i) for(int j = 0; j < list.size(); ++j) sum += list.get(i) / list.get(j); return sum; } }