Searching in reverse direction

Hello,
Anybody any idea as to how i can search a string or character starting from the reverse direction i.e from the end point of the document
Thanks in advance.
Reg,
suri

OOOPS, sorry, here is the right one:
public class reversDemo {
public reversDemo() {
public static void main (String args[]) {
java.lang.String s = "Hello World";
for(int i=0; i<s.length(); i++){
System.out.println(s.substring(s.length()-i-1, s.length()-i));
}

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Find reference reverse direction

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Thanks for the reply Jochen!
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"#{backingBeanScope.ConsumerBackingBean}",
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AdfFacesContext adffacesContext = null;
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adffacesContext.addPartialTarget(consumer.getMirrorTxt());
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Replaace values in the columns reverse direction

Oracle 11.2.0.1
Windows
create table test
code varchar2(2),
col1 varchar2(2),
col2 varchar2(2),
col3 varchar2(2),
col4 varchar2(2),
col5 varchar2(2),
col6 varchar2(2)
insert into test values ('01','K','P','O','R',null,null);
insert into test values ('02','I','S','L',null,null,null);
insert into test values ('03','P',null,null,null,null,null);
insert into test values ('04','K','N',null,null,null,null);
insert into test values ('05','K','N','Z','G','H','T');
SQL> select * from test;
CO CO CO CO CO CO CO
01 K P O R
02 I S L
03 P
04 K N
05 K N Z G H T
Required Output : (Reverse Values in the columns)
CO CO CO CO CO CO CO
01 R O P K
02 L S I
03 P
04 N K
05 T H G Z N K
Thanks.

with
test as
(select '01' code,'K' col1,'P' col2,'O' col3,'R' col4,null col5,null col6 from dual union all
select '02','I','S','L',null,null,null from dual union all
select '03','P',null,null,null,null,null from dual union all
select '04','K','N',null,null,null,null from dual union all
select '05','K','N','Z','G','H','T' from dual
select code,
       substr(cols,instr(cols,'|',-1,2) + 1,instr(cols,'|',-1,1) - instr(cols,'|',-1,2) - 1) col1,
       substr(cols,instr(cols,'|',-1,3) + 1,instr(cols,'|',-1,2) - instr(cols,'|',-1,3) - 1) col2,
       substr(cols,instr(cols,'|',-1,4) + 1,instr(cols,'|',-1,3) - instr(cols,'|',-1,4) - 1) col3,
       substr(cols,instr(cols,'|',-1,5) + 1,instr(cols,'|',-1,4) - instr(cols,'|',-1,5) - 1) col4,
       substr(cols,instr(cols,'|',-1,6) + 1,instr(cols,'|',-1,5) - instr(cols,'|',-1,6) - 1) col5,
       substr(cols,instr(cols,'|',-1,7) + 1,instr(cols,'|',-1,6) - instr(cols,'|',-1,7) - 1) col6
from (select code,rtrim('|'||col1||'|'||col2||'|'||col3||'|'||col4||'|'||col5||'|'||col6,'|')||'|' cols
          from test
CODE
COL1
COL2
COL3
COL4
COL5
COL6
01
R
O
P
K
02
L
S
I
03
P
04
N
K
05
T
H
G
Z
N
K
Regards
Etbin

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