Collection x temp table - what is the best title?

Question

In which of the structures bellow the performance is better? In the first, I use a collection with forall. In the second, I use a temp table with for loop.
Consider the data to be the same in both the collection and the temp table.
case 1 - collection:
DECLARE
TYPE NumList IS VARRAY(10000) OF NUMBER;
depts NumList := NumList(10, 30, 70 ... 10000); -- department numbers
BEGIN
FORALL i IN depts.FIRST..depts.LAST
DELETE FROM emp WHERE deptno = depts(i);
END;
case 2 - temp table:
-- temp table
create global temporary table depts
num number
-- inserts
insert into depts (num) values (10);
insert into depts (num) values (30);
insert into depts (num) values (10000);
-- code
BEGIN
FOR i IN (select num from depts) LOOP
DELETE FROM emp WHERE deptno = i.num;
END LOOP;
END;

Answer 1

Do you need loop in Case 2?
Wouldn't this do?
DELETE FROM emp WHERE deptno IN (select num from depts);Check this Collections vs table for discussion on similar topic