how to get computed column data in ascending order

hi, using u r query i written the following function that checks where the input given is existed in that computed table or not. if it exists it returns 'Already Exists' else 'Available'.
But here i will pass input @Ids in any order ex:@Ids = '41,56,87,34'
from the above ex: input @Ids = '41,56,87,34' the string must be taken input in ascending order ie;'34,41,56,87'.
so how we can convert the @Ids value in ascending order in that function.

ALTER FUNCTION [dbo].[Check_MemberIDCombination]
(
@Ids VARCHAR(1000)
)
RETURNS VARCHAR(20)
AS
BEGIN

DECLARE @Msg VARCHAR(20);
declare @count int

DECLARE @Computed table(id nvarchar(1000),Member_Id nvarchar(1000))
insert into @computed
select ID, substring(Applicant_Member_Ids,1,len(Applicant_Member_Ids)-1) from
(
select ID ,
(select convert(varchar, Applicant_Member_Id) + ',' as [text()] from Savings_Account_Applicant where ID =saa.ID order by Applicant_Member_Id for xml path('')) as Applicant_Member_Ids
from Savings_Account_Applicant saa
group by ID
) as Savings_Account ORDER BY ID

set @count = ( select count(*) from @Computed where Member_Id=@Ids)

if @count>0
begin

SET @Msg = 'Already Exists'
end
ELSE
begin
SET @Msg = 'Available'

END
RETURN @Msg
end