Java Collections Framework - Building Java Programs: A Back to Basics Approach - page 709

12. A Set doesn't have the get and set methods that an ArrayList has. How do you examine every element of a Set ?
13. What elements are contained in the following set after this code executes?
Set<Integer> set = new HashSet<Integer>();
set.add(74);
set.add(12);
set.add(182);
set.add(90);
set.add(43);
set.remove(74);
set.remove(999);
set.remove(43);
set.add(32);
set.add(182);
set.add(9);
set.add(29);
14. What elements are contained in the following set after this code executes?
Set<Integer> set = new HashSet<Integer>();
set.add(8);
set.add(41);
set.add(18);
set.add(50);
set.add(132);
set.add(28);
set.add(79);
set.remove(41);
set.remove(28);
set.add(86);
set.add(98);
set.remove(18);
15. What elements are contained in the following set after this code executes?
Set<Integer> set = new HashSet<Integer>();
set.add(4);
set.add(15);
set.add(73);
set.add(84);
set.add(247);
set.remove(15);
set.add(42);
set.add(12);
set.remove(73);
set.add(94);
set.add(11);