Sir I have these codes

CREATE CURSOR junk(qty n(3),idid n(3))

INSERT INTO junk values(5,1)
INSERT INTO junk values(10,0)
INSERT INTO junk values(15,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(15,0)
INSERT INTO junk values(10,0)
INSERT INTO junk values(5,0)
INSERT INTO junk values(0,0)
INSERT INTO junk values(10,0)
INSERT INTO junk values(15,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(15,0)
INSERT INTO junk values(10,0)
INSERT INTO junk values(5,0)
INSERT INTO junk values(10,0)
INSERT INTO junk values(15,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(20,0)
INSERT INTO junk values(15,0)
INSERT INTO junk values(10,0)
INSERT INTO junk values(5,0)

I want to fill idid column as follows




Logic:

Qty increase then decrease in every idid group.
New idid starts from small to bigger number like shown with red color.

Please