How to find distinct from number of list in string

How to find distinct from number of list in string in SQL

Solution:

SELECT LTRIM(H,',') OUTPUT
FROM
(SELECT sys_connect_by_path(K,',') H,
L val
FROM
(SELECT K,
ROW_NUMBER() OVER (ORDER BY K) L
FROM
(SELECT UNIQUE TO_NUMBER(REPLACE(SUBSTR(G,1,INSTR(G,',',1)),',','')) K
FROM
(SELECT B,
J,
A,
(LTRIM(SUBSTR(A,B,J),',')) G
FROM
( SELECT DISTINCT b,
LEAD(b)over (order by b ASC) j,
A
FROM
(SELECT instr(a,',',level)b,
A
FROM
(SELECT ('1,2,0,2,432,445,3,3,-1,10099,-2,0.32,0.3432,.3432,4,4,5,6,0.32,-2,432,32,21029,10099,3209839')
||',' a
FROM dual
)
CONNECT BY level <=LENGTH(A)+1
ORDER BY b
)
)
WHERE B<>J
ORDER BY B
)
ORDER BY 1
)
ORDER BY K
)
WHERE connect_by_isleaf=1
START WITH L =1
CONNECT BY L = prior L+1

);