oracle 归并

DECLARE
   TYPE num_tt IS TABLE OF INT;
   num_t1 num_tt:=num_tt();
   num_t2 num_tt:=num_tt();
   num_t3 num_tt:=num_tt();
   i_1 INT := 1;
   j_1 INT := 1;
   d_1 INT := 1;
BEGIN
   num_t1.extend(20);
   num_t2.extend(20);
   num_t3.extend(num_t1.count+num_t2.count);
   FOR i IN 1..20 LOOP
     num_t1(i) := trunc(dbms_random.value(200,100000));
   END LOOP;
   dbms_output.put_line('num_t1:');
   quick_sort(num_t1, 1, num_t1.count);
   FOR i IN 1..num_t1.count LOOP
     dbms_output.put_line(num_t1(i)||',');
   END LOOP;
   FOR i IN 1..20 LOOP
     num_t2(i) := trunc(dbms_random.value(200,100000));
   END LOOP;
   dbms_output.put_line('num_t2:');
   quick_sort(num_t2, 1, num_t2.count);
   FOR i IN 1..num_t2.count LOOP
     dbms_output.put_line(num_t2(i)||',');
   END LOOP;
   WHILE(i_1 <= num_t1.count AND j_1 <= num_t2.count) LOOP
     IF(num_t1(i_1) > num_t2(j_1)) THEN
        num_t3(d_1) := num_t2(j_1);
        j_1 := j_1 + 1;
     ELSE
        num_t3(d_1) := num_t1(i_1);
        i_1 := i_1 + 1;
     END IF;
     d_1 := d_1 + 1;
   END LOOP;
   IF(i_1<=num_t1.count) THEN
     FOR i IN i_1..num_t1.count LOOP
       num_t3(d_1) := num_t1(i);
       d_1 := d_1+1;
     END LOOP;
   ELSE
      FOR i IN j_1..num_t2.count LOOP
        num_t3(d_1) := num_t2(i);
        d_1 := d_1+1;
      END LOOP;
   END IF;
   dbms_output.put_line('num_t3:'); 
    FOR i IN 1..num_t3.count LOOP
     dbms_output.put_line(num_t3(i)||',');
   END LOOP;   
END;