For loop in a recursion

I am trying to write a program in which a series of numbers are generated by a recursive function based on strict number rules... such as the first number is always 94 and it can be only followed by 94,95,96,97, etc... I would like to get some help because I am doing a for loop in my recursive method, however the method just ends after one iteration and only display the first serie of numbers. I don't understand what I did wrong, so if someone could fix that part for me or tell me what is going wrong, I will appreciate a lot... Here is the code:
public class StringSeries {
     static int nextInteger;
     static int lastInteger;
     static String numberWord = "";
     public static int[] lastNumber(int k, int nextK){
          if (k==94){
               if (nextK==94){
                    int numEnd9494[]={97};
                    return numEnd9494;
               if (nextK==95){
                    int numEnd9495[]={97,98};
                    return numEnd9495;
               if (nextK==96){
                    int numEnd9496[]={97,98,99};
                    return numEnd9496;
               if (nextK==97){
                    int numEnd9497[]={97,98,99};
                    return numEnd9497;
               if (nextK==98){
                    int numEnd9498[]={98,99};
                    return numEnd9498;
               if (nextK==99){
                    int numEnd9499[]={99};
                    return numEnd9499;
          return null;
     public static int[] nextNumber(int n){
          if(n==94){
               int numArray94[] = {94,95,96,97};
               return numArray94;
          if(n==95) {
               int numArray95[] = {95,96,97,98};
               return numArray95;
          if(n==96) {
               int numArray96[] = {96,97,98,99};
               return numArray96;
          if(n==97) {
               int numArray97[] = {97,98,99};
               return numArray97;
          if(n==98){
               int numArray98[] = {98,99};
               return numArray98;
          if(n==99){
               int numArray99[] = {99};
               return numArray99;
          else
               return null;
     // When this method is called out for the first time, "nextInt" must be the same as "firstInt"
     public static String generateSequence(int firstInt, int nextInt, int seqLength){
          if (seqLength==1) {
               for (int i=0; i<(lastNumber(firstInt,nextInt)).length; i++) {
                         lastInteger = (lastNumber(firstInt,nextInt));
                         numberWord = "" + lastInteger;
                         return numberWord;
          else {
                    for (int j=0; j <(nextNumber(nextInt)).length; j++){
                         nextInteger = (nextNumber(nextInt))[j];
                         numberWord = nextInteger + " " + generateSequence(firstInt,nextInteger,seqLength-1);
                         return numberWord;
               return null; //I don't understand why I have to put this line or else I get a compiler error
     } // End of method
} // End of class

I made that one change, but then I just get the last serie of numbers.... Is there like some small mistake with my for loop besides the one you had pointed out?
// When this method is called out for the first time, "nextInt" must be the same as "firstInt"
     public static String generateSequence(int firstInt, int nextInt, int seqLength){
          if (seqLength==1) {
               for (int i=0; i<(lastNumber(firstInt,nextInt)).length; i++) {
                         lastInteger = (lastNumber(firstInt,nextInt));
                         numberWord = "" + lastInteger;
return numberWord;
          else {
                    for (int j=0; j <(nextNumber(nextInt)).length; j++){
                         nextInteger = (nextNumber(nextInt))[j];
                         numberWord = nextInteger + " " + generateSequence(firstInt,nextInteger,seqLength-1);
return numberWord;
     } // End of method

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For-loop in XSLT-Important

All,
version:11.1.1.4
I have a requirement in the for-loop which has to iterate for a fixed loop. For instance: I want the for-loop to iterate only for 5 times, how should I define the for-loop? Any idea, please share your thoughts.
<xsl:for-each select="5">
</xsl:for-each>
I tried the above code, didn't work!.
Rgds
sen

You can use templates in xslt like one below :- Assign max - 5 and this will loop for 5 times.
<xsl:template name="loop">

<xsl:param name="i"/>
<xsl:param name="max"/>
<xsl:if test="$i <= $max">
    
    
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</xsl:if>
</xsl:template>
<xsl:call-template name="loop">
<xsl:with-param name="i" select="number(1)"/>
<xsl:with-param name="max" select="number(5)"/>
</xsl:call-template>
Or you can also do while loop like one below:-

<xsl:template name="while">
<xsl:variable name="VALUE">

</xsl:variable>

<xsl:if test="$VALUE=0">
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Cursor for loop problem

Hi to all!
I have this sample data:
CREATE TABLE person(id NUMBER PRIMARY KEY,
                    first_name VARCHAR2(30),
                    father_id NUMBER REFERENCES person(id),
                    mother_id NUMBER REFERENCES person(id));
INSERT INTO person
VALUES (1, 'John', NULL, NULL);
INSERT INTO person
VALUES (10, 'John''s son Bill', 1, NULL);
INSERT INTO person
VALUES (20, 'John''s daughter Briana', 1, NULL);
INSERT INTO person
VALUES (100, 'Bill''s son George', 10, NULL);
INSERT INTO person
VALUES (101, 'Bill''s son Matthew', 10, NULL);
INSERT INTO person
VALUES (200, 'Briana''s son Greg', 20, NULL);
INSERT INTO person
VALUES (201, 'Briana''s son Fred', 20, NULL);
/Then I execute this PL/SQL anonymous block:
SET SERVEROUTPUT ON
DECLARE
    CURSOR children IS
      SELECT s.first_name name
      FROM person s, person p
      WHERE (s.father_id = p.id OR s.mother_id = p.id)
      AND p.id = 1;
    CURSOR g_children IS
        SELECT s.first_name gc_name
        FROM person s, person p
        WHERE (s.father_id = p.id OR s.mother_id = p.id)
        AND p.id IN (SELECT gs.id FROM person gs, person gp
                     WHERE (gs.father_id = gp.id OR gs.mother_id = gp.id)
                     AND gp.id = 1);
BEGIN
    FOR c_rec IN children LOOP
      DBMS_OUTPUT.PUT_LINE(c_rec.name);
         FOR g_rec IN g_children LOOP
            DBMS_OUTPUT.PUT_LINE(g_rec.gc_name);
         END LOOP;
    END LOOP;
END;I have this result:
John's son Bill
Bill's son George
Bill's son Matthew
Briana's son Greg
Briana's son Fred
John's daughter Briana
Bill's son George
Bill's son Matthew
Briana's son Greg
Briana's son FredHow could I modify nested for loop, so that I have output like this:
John's son Bill
Bill's son George
Bill's son Matthew
John's daughter Briana
Briana's son Greg
Briana's son FredSo that I have one child and then his children, and then second child and his/her children, and so on.
Thanks!
Edited by: Spooky on 2013.02.06 12:54

Suri wrote:
BluShadow wrote:
You would need to parameterize your children query to it only get's the children of that parent.Hi Blu,
I understood that it can be easily solved by CONNECT BY PRIOR clause.
Just for curisosity I am asking you, Assume that if we dont know till what level children details exist in person table (for eg: John's son is Bill , Bill's son is XYZ , XYZ son is ABC etc), is there any better way to acheive this using parameter cursor. Oh yeah, sure... use recursion...
SQL> CREATE TABLE person(id NUMBER PRIMARY KEY,
2                      first_name VARCHAR2(30),
3                      father_id NUMBER REFERENCES person(id),
4                      mother_id NUMBER REFERENCES person(id)
5                     )
6 /
Table created.
SQL>
SQL> INSERT INTO person VALUES (1, 'John', NULL, NULL);
1 row created.
SQL> INSERT INTO person VALUES (10, 'John''s son Bill', 1, NULL);
1 row created.
SQL> INSERT INTO person VALUES (20, 'John''s daughter Briana', 1, NULL);
1 row created.
SQL> INSERT INTO person VALUES (100, 'Bill''s son George', 10, NULL);
1 row created.
SQL> INSERT INTO person VALUES (101, 'Bill''s son Matthew', 10, NULL);
1 row created.
SQL> INSERT INTO person VALUES (200, 'Briana''s son Greg', 20, NULL);
1 row created.
SQL> INSERT INTO person VALUES (201, 'Briana''s son Fred', 20, NULL);
1 row created.
SQL>
SQL> set serverout on
SQL>
SQL> declare
2    procedure recurse_persons(father_id in number, lvl number := 0) as
3      cursor cur_person is
4        select *
5        from   person
6        where nvl(father_id,0) = nvl(recurse_persons.father_id,0);
7    begin
8      for p in cur_person
9      loop
10        dbms_output.put_line('['||to_char(lvl+1)||']'||lpad(' ',lvl*2,' ')||p.first_name);
11        recurse_persons(p.id, lvl+1);
12      end loop;
13    end;
14 begin
15    recurse_persons(null);
16 end;
17 /
[1]John
[2] John's son Bill
[3]    Bill's son George
[3]    Bill's son Matthew
[2] John's daughter Briana
[3]    Briana's son Greg
[3]    Briana's son Fred
PL/SQL procedure successfully completed.With that, we're just using one cursor definition that suits all, and using recursion to go down each branch of the hierarchy, regardless of how deep. Of course you then run the risk (if it's a very deep hierarchy) of getting a "too many open cursors" error.

How can I repeat a for loop, once it's terms has been fulfilled???

Well.. I've posted 2 different exceptions about this game today, but I managed to fix them all by myself, but now I'm facing another problem, which is NOT an error, but just a regular question.. HOW CAN I REPEAT A FOR LOOP ONCE IT HAS FULFILLED IT'S TERMS OF RUNNING?!
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Main.java:
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import java.awt.*;
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import java.util.*;
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And now all I need is you to answer my question! =)

package forums;
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import java.awt.event.*;
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How to pass the sequence number of current loop in a for loop in FPGA vi to the host

PCI-7830R
LV 8.2
What I was trying to do is to use multiple DIO to generate pulse at different sequence. Mode one is to automatically sweep from DIO1 to DIO20; mode 2 is several DIOs generate pulse simoutaneously. So I use a case structure to make the selection, in the mean time, I set up two for loop in each case so that I can use multiple pulse generations. For example, in scanning mode, if I set 2 exposures, it sweeps from 1 to 20 then do it again.
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Thanks for the reply Jared.
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How do we use if statement in labview?moreover can i use if statement inside for loop?

how do we use if statement in labview?moreover can i use if statement inside for loop?

The if statement in LabVIEW is the Case structure. You can find that on the Structures palette right next to the For Loop. If you're still on the same subject about terminating a for loop early, then what you do is enclose your functions inside the loop with a case statment and make one of the case's empty except for one or more constants that you might have to wire. Hopefully, the attached picture will explain what I mean. Also, as I mentioned in one of your other posts, I think this technique is not as good as using a while loop. The array in the attached example is the same size no matter what and you may have to handle stripping extra or invalid elements.
Attachments:
For_Loop_with_Case.jpg ‏21 KB

Select statement in a for loop

Hi all,
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I tries using (even if its very simple for loop) it gives the following error
PL/SQL: ORA-00933: SQL command not properly ended...
code is
DECLARE
CURSOR C1 is select 'Monday' from dual
union all
select 'Tuesday' from dual
union all
select 'Wednesday' from dual
union all
select 'Thursday' from dual
union all
select 'Friday' from dual
union all
select 'Saturday' from dual
union all
select 'Sunday' from dual;
        type rec_info is record
        name varchar2(20),
        FNAME varchar2(20),
        LNAME varchar2(20)
        type ty_info is table of rec_info;
        info ty_info;
        type rec_abc is record
        day varchar2(3000)
        type ty_abc is table of rec_abc;
        abc ty_abc;
        Cursor C2 is
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        from territories t, users u, territories_users tu
        where t.ID = tu.TERRITORY_ID
        and tu.USER_ID = u.ID ;
BEGIN
OPEN C1;
Loop
FETCH C1 into abc;
EXIT when C1%notfound;
DBMS_OUTPUT.PUT_LINE(abc);
END LOOP;
CLOSE C1;
OPEN C2;
FETCH C2 BULK COLLECT into info;
CLOSE C2;
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       LOOP
                   for j in abc.first .. abc.last
                   LOOP
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                        to_char(c.name)||' '||ct.PRIMARY_ADDRESS_CITY||','||ct.PRIMARY_ADDRESS_STATE||','||ct.PRIMARY_ADDRESS_COUNTRY
                       from
                        territories t, territories_users tu,
                        users u, calls_users cu, calls c,
                        calls_contacts cc, contacts ct
                        where
                        tu.TERRITORY_ID = t.id
                        and t.name = info(i).name
                        and u.first_name = info(i).FNAME
                        and u.last_name = info(i).LNAME
                      and (c.date_start between trim(next_day(sysdate,abc(j).day)) and trim(next_day(sysdate,abc(j).day)))
                        and tu.USER_ID = u.id
                        and cu.USER_ID = u.id
                        and cu.CALL_ID = c.id
                        and to_char(c.time_start,'hh24') < '12'
                        and cc.CALL_ID = c.ID
                        and cc.CONTACT_ID = ct.id
                        and rownum < 2
                 END LOOP;
     END LOOP;
END;

"Can a select stmt be used in the body of the for loop/ nested for loop "
Yes.... but with an INTO part.....
select c1 , c2 , c3 into var1 , var2 , var3 from table1
Sim

If statement doesn't affect for loop

I wrote a function within a function to control 2 Tweens.
(the 2nd one isnt in the function, it's called)
My problem is... is that it works for the first time.. the button is hovered over and all the other buttons show themselves and then disappear again, except the one you're over. Then I do it a 2nd time and it doesn't work. why is it only working right one time? and why isn't the if statement I put in the local function affecting the for loop? The 2nd time it takes the button you're hovering over with it and fades it out. (even though the if statement registers according to trace)
this is the code
import fl.transitions.Tween;
import fl.transitions.easing.*;
var shortInst:Array = [btn1, btn2, btn3, exit];
var objTween:Tween;
function mouseOff(e:Event):void {
     if (e.currentTarget.alpha !== 0) {
          objTween = new Tween(e.currentTarget, "alpha", None.easeOut, 1, 0, 0.25, true);
var eTimer:Timer = new Timer(3000, 1); //timer that only runs once (in ms)
function navFX(e:Event):void {
     for (var i:Number = 0; i < shortInst.length; i++) {
          objTween = new Tween(shortInst[i], "alpha", None.easeOut, 0, 1, 0.25, true);
          eTimer.addEventListener(TimerEvent.TIMER, local);
          eTimer.start();
          function local(t:TimerEvent):void {
               trace("e.target in local func: " + e.target);
               for (var i:Number = 0; i < shortInst.length; i++) {
                    if (shortInst[i] !== e.target) {
                    shortInst[i].dispatchEvent(new Event(MouseEvent.MOUSE_OUT));

is this what you want?
import fl.transitions.Tween;
import fl.transitions.easing.*;
var shortInst:Array = [btn1,btn2,btn3,exit];
var objTween:Tween;
function mouseOff(e:Event):void
if (e.currentTarget.alpha !== 0)
objTween = new Tween(e.currentTarget,"alpha",None.easeOut,1,0,0.25,true);
function navFX(e:Event):void
var eTimer:Timer = new Timer(3000,1); // <- moved that line here
for (var i:Number = 0; i < shortInst.length; i++)
objTween = new Tween(shortInst[i],"alpha",None.easeOut,0,1,0.25,true);
eTimer.addEventListener(TimerEvent.TIMER, local);
eTimer.start();
function local(t:TimerEvent):void
trace("e.target in local func: " + e.target);
for (var i:Number = 0; i < shortInst.length; i++)
   if (shortInst[i] !== e.target)
    shortInst[i].dispatchEvent(new Event(MouseEvent.MOUSE_OUT));
for (var i:Number = 0; i < shortInst.length; i++)
shortInst[i].alpha = 0;
shortInst[i].addEventListener(MouseEvent.MOUSE_OVER, navFX);
shortInst[i].addEventListener(MouseEvent.MOUSE_OUT, mouseOff);

Help with Mathscipt and for loop

I have a code in Mathscript/matlab and I need to output the array out. One option is my first code,the other option is using a for loop, but I am only getting the last ouput out. I need to get the whole output out.
Any help.
Thanks
Solved!
Go to Solution.
Attachments:
Help with Mathscript_for loop.vi ‏115 KB
Help with Mathscript_for loop2.vi ‏84 KB

Here's how it should look like.
Message Edited by altenbach on 10-30-2008 05:12 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
MathscriptInFOR.png ‏15 KB

Why use cursor and for loop?

Hi All
So in general why would we use a cursor and a for loop to do update in a stored procedure?
Why wouldnt we just use a single update statement ?
is there compelling reason for using a cursor and a for loop: I am reading some code from a co-worker that the business logic for the select (set need to be updated) is complex but the update logic is simple (just set a flag to (0 or 1 or 2 or 3 or 4).
But eventually the select come down to a key (row_id) so I re-write it using just a single sql statement.
The size of the main table is about 2.6 to 3million rows
Any thoughts on that??
The code below I just do a google for cursor for update example in case for something to play with
-Thanks for all your input
create table f (a number, b varchar2(10));
insert into f values (5,'five');
insert into f values (6,'six');
insert into f values (7,'seven');
insert into f values (8,'eight');
insert into f values (9,'nine');
commit;
create or replace procedure wco as
cursor c_f is
    select a,b from f where length(b) = 5 for update;
    v_a f.a%type;
    v_b f.b%type;
begin
open c_f;
loop
    fetch c_f into v_a, v_b;
    exit when c_f%notfound;
    update f set a=v_a*v_a where current of c_f;
end loop;
close c_f;
end;
exec wco;
select * from f;
drop table f;
drop procedure wco;
Joining multiple tables
create table numbers_en (
id_num number        primary key,
txt_num varchar2(10)
insert into numbers_en values (1, 'one' );
insert into numbers_en values (2, 'two' );
insert into numbers_en values (3, 'three');
insert into numbers_en values (4, 'four' );
insert into numbers_en values (5, 'five' );
insert into numbers_en values (6, 'six' );
create table lang (
   id_lang   char(2) primary key,
   txt_lang varchar2(10)
insert into lang values ('de', 'german');
insert into lang values ('fr', 'french');
insert into lang values ('it', 'italian');
create table translations (
id_num    references numbers_en,
id_lang   references lang,
txt_trans varchar2(10) not null
insert into translations values (1, 'de', 'eins'   );
insert into translations values (1, 'fr', 'un'     );
insert into translations values (2, 'it', 'duo'    );
insert into translations values (3, 'de', 'drei'   );
insert into translations values (3, 'it', 'tre'    );
insert into translations values (4, 'it', 'quattro');
insert into translations values (6, 'de', 'sechs' );
insert into translations values (6, 'fr', 'six'    );
declare
cursor cur is
      select id_num,
             txt_num,
             id_lang,
             txt_lang,
             txt_trans
        from numbers_en join translations using(id_num)
                   left join lang         using(id_lang)
    for update of translations.txt_trans;
rec cur%rowtype;
begin
for rec in cur loop
    dbms_output.put (
      to_char (rec.id_num         , '999') || ' - ' ||
      rpad    (rec.txt_num        ,   10 ) || ' - ' ||
      rpad(nvl(rec.txt_trans, ' '),   10 ) || ' - ' ||
               rec.id_lang                 || ' - ' ||
      rpad    (rec.txt_lang       ,   10 )
    if mod(rec.id_num,2) = 0 then
      update translations set txt_trans = upper(txt_trans)
       where current of cur;
       dbms_output.put_line(' updated');
    else
      dbms_output.new_line;
    end if;
end loop;
end;
/Edited by: xwo0owx on Apr 25, 2011 11:23 AM

Adding my sixpence...
PL/SQL is not that different from a SQL perspective than any other SQL client language like Java or C# or C/C++. PL/SQL simply integrates the 2 languages a heck of a lot better and far more transparent than the others. But make no mistake in that PL/SQL is also a "client" language from a SQL perspective. The (internal) calls PL/SQL make to the SQL engine, are the same (driver) calls made to the SQL engine when using Java and C and the others.
So why a cursor and loops in PL/SQL? For the same reason you have cursors and loops in all these other SQL client languages. There are the occasion that you need to pull data from the SQL engine into the local language to perform some very funky and complex processing that is not possible using the SQL language.
The danger is using client cursor loop processing as the norm - always pulling rows into the client language and crunching it there. This is not very performant. And pretty much impossible to scale. Developers in this case views the SQL language as a mere I/O interface for reading and writing rows. As they would use the standard file I/O read() and write() interface calls.
Nothing could be further from the truth. SQL is a very advance and sophisticated data processing language. And it will always be faster than having to pull rows to a client language and process them there. However, SQL is not Turing complete. It is not the procedural type language that most other languages we use, are. For that reason there are things that we cannot do in SQL. And that should be the only reason for using the client language, like PL/SQL or the others, to perform row crunching using a client cursor loop.

How to add cursor and for loop

PROCEDURE "TEST" is
bala number;
ins1 number;
ins2 number;
BEGIN
select sum(bal) into bala from (select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum!='SG030001'
group by acp_instruid
union
select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum!='SG030001'
and acp_instruid=c_srm_prntinsid
group by acp_instruid)view1;
dbms_output.put_line(bala);
select acp_instruid into ins1 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum='SG030001';
dbms_output.put_line('principal'||ins1);
select acp_instruid into ins2 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum='SG030001'
and acp_instruid=c_srm_prntinsid;
dbms_output.put_line('parent'||ins2);
update cs_acpos_bkp
set acp_totbal=-bala
where acp_instruid=ins2
and acp_acntnum='SG030001';
END;
i have written this code,i need to use cursor and for loops to get more than one rows and update also.
if there are more than 1 rows in cs_strmap_t,then the procedure throws an error stating that it cannot take 2 rows.
Edited by: 850836 on Apr 7, 2011 11:43 PM

PROCEDURE "TEST" is
bala number;
ins1 number;
ins2 number;
CURSOR cur_1 IS
select sum(bal) bala from (select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum='SG030001'
group by acp_instruid
union
select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum='SG030001'
and acp_instruid=c_srm_prntinsid
group by acp_instruid)view1;
BEGIN
select acp_instruid into ins1 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum='SG030001';
dbms_output.put_line('principal'||ins1);
select acp_instruid into ins2 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum='SG030001'
and acp_instruid=c_srm_prntinsid;
dbms_output.put_line('parent'||ins2);
for var_for in cur_1
loop
update cs_acpos_bkp
set acp_totbal=var_for.bala
where acp_instruid=ins2
and acp_acntnum='SG030001'
and abs(acp_totbal)>abs(bala);
dbms_output.put_line(bala);
end loop;
END;
i wrote the following procedure,but the balance is not getting updated.
Getting this errors when there are more than 1 row in cs_strmap_t table
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: line 22
ORA-06512: at line 2

How to ignore error and continue with next value in PL/SQL FOR loop?

hi,
When the DROP INDEX statement fails it have to continue with the next value in FOR loop without exiting from the loop. Can anyone tell me how to do this?
DECLARE
CURSOR aud_cur IS
SELECT key_col_idx FROM audience_work where aud_ref_id between 106 and 109;
BEGIN
FOR aud_row IN aud_cur LOOP
EXECUTE IMMEDIATE
'DROP INDEX ' || aud_row.key_col_idx;
END LOOP;
END;
Thanks,
Noble

DECLARE
CURSOR aud_cur
IS
SELECT key_col_idx FROM audience_work where aud_ref_id between 106 and 109;
BEGIN
FOR aud_row IN aud_cur LOOP
    begin
      EXECUTE IMMEDIATE 'DROP INDEX ' || aud_row.key_col_idx;
    exception
      when others then
        if sqlcode = -01418 then
          dbms_output.put_line(' index does not exist ');
        else
          dbms_output.put_line(sqlcode);
          raise;
        end if;
    end;
END LOOP;
END;
/

For Loop and Void Method Questions

Question 1: How would I write a for loop that repeats the according to the number entered, to prompt the user to enter a number (double) between 1 and 100. If the number is outside this range it is not accepted.
Question: 2 Also how would I write a for loop to do sum and find the average of the array numbers in a seperate void method( does not return anything to the main method)?
Question: 3 (first code snippet) With my for loop that is used to process each number in the array and square it and cube it and display the results to 2 decimal places. How do I make it so say I want the array to allow me to enter 2 numbers (so I enter 2 numbers) then it asks me to enter a number between 1 -100 (which will prompt 2 times) that it shows me the results for the entered numbers between 1-100 after one another instead of number then result number then result like I how it now.
for (int index = 0; index < howNum; index++) // process each number in the array
          enterYourNumbers = JOptionPane.showInputDialog
                        ("Enter a number between 1 and 100");
          numArray = new double[howNum];
        try
            numArray[index] = Double.parseDouble(enterYourNumbers);
        catch (NumberFormatException e)
                enterYourNumbers = JOptionPane.showInputDialog
                          ("Enter a number between 1 and 100");
            DecimalFormat fmt = new DecimalFormat ("###,###.00");
            JOptionPane.showMessageDialog(null, enterYourNumbers + " " + "squared is " + fmt.format(calcSquare(numArray[index]))
                                          + "\n" + enterYourNumbers + " " + "cubed is " + fmt.format(calcCube(numArray[index])));
            wantToContinue = JOptionPane.showInputDialog ("Do you want to continue(y/n)? ");
while (wantToContinue.equalsIgnoreCase("y"));
import javax.swing.*;
import java.text.DecimalFormat;
public class Array
    public static void main(String[] args)
        int howNum = 0;
        int whichNum = 0;
        double[] numArray;
        boolean invalidInput = true;
        String howManyNumbers, enterYourNumbers, wantToContinue;
do // repeat program while "y"
      do // repeat if invalid input
        howManyNumbers = JOptionPane.showInputDialog
                    ("How many numbers do you want to enter");
        try
             howNum = Integer.parseInt(howManyNumbers);
             invalidInput = false;
        catch (NumberFormatException e )
            howManyNumbers = JOptionPane.showInputDialog
                        ("How many numbers do you want to enter");
      while (invalidInput);
      for (int index = 0; index < howNum; index++) // process each number in the array
          enterYourNumbers = JOptionPane.showInputDialog
                        ("Enter a number between 1 and 100");
          numArray = new double[howNum];
        try
            numArray[index] = Double.parseDouble(enterYourNumbers);
        catch (NumberFormatException e)
                enterYourNumbers = JOptionPane.showInputDialog
                          ("Enter a number between 1 and 100");
            DecimalFormat fmt = new DecimalFormat ("###,###.00");
            JOptionPane.showMessageDialog(null, enterYourNumbers + " " + "squared is " + fmt.format(calcSquare(numArray[index]))
                                          + "\n" + enterYourNumbers + " " + "cubed is " + fmt.format(calcCube(numArray[index])));
            wantToContinue = JOptionPane.showInputDialog ("Do you want to continue(y/n)? ");
while (wantToContinue.equalsIgnoreCase("y"));
    public static double calcSquare(double yourNumberSquared)
        return yourNumberSquared * yourNumberSquared;
    public static double calcCube(double yourNumberCubed)
       return yourNumberCubed * yourNumberCubed * yourNumberCubed;
    public static void calcAverage(double yourNumberAverage)
}

DeafBox wrote:
Question 1: How would I write a for loop that repeats the according to the number entered, to prompt the user to enter a number (double) between 1 and 100. If the number is outside this range it is not accepted. Use a while loop instead.
Question: 2 Also how would I write a for loop to do sum and find the average of the array numbers in a seperate void method( does not return anything to the main method)? Why would you want to use 2 methods. Use the loop to sum the numbers. Then after the loop a single line of code calculates the average.
Question: 3 (first code snippet) With my for loop that is used to process each number in the array and square it and cube it and display the results to 2 decimal places. How do I make it so say I want the array to allow me to enter 2 numbers (so I enter 2 numbers) then it asks me to enter a number between 1 -100 (which will prompt 2 times) that it shows me the results for the entered numbers between 1-100 after one another instead of number then result number then result like I how it now. If I understand you correctly, use 2 loops. One gathers user inputs and stores them in an array/List. The second loop iterates over the array/List and does calculations.

How do I use an enhanced for loop / for each on my ViewObjectImpl ?

Guys and Gals,
With all of my newly acquired Java knowledge in tow, I spent this weekend cleaning up all of my code, dealing mainly with for loops. I converted them from a huge mess to a for each type loop using language such as ...
    RowSet priceUpdateRows = (RowSet)((PriceUpdatesViewRowImpl) priceUpdate).getPriceUpdateRowsView();
    for (Row priceUpdateRow: priceUpdateRows)
    { // do operations on row... which makes perfect sense to me. For each Row in the RowSet, do something. It doesn't, however, makes sense to the compiler. It pouts and gives me a "foreach not applicable to expression type" error. So I read up on iterators and such, messed with code examples, and still can't get the RowSet to iterate with the above code. Could I make RowSet implement Iterable? How would I do that? I tried to create a class called RowSetExt which extended RowSet and implemented Iterable, but then I got a class cast exception.
I know I could implement something like the following or a while(hasNext()) but they're really not what I'm looking for.
ViewObject vo = … < Get ViewObject > …
RowSetIterator rsi = vo.createRowSetIterator("rowsRSI");
while (rsi.hasNext())
     Row row = rsi.next();
     row.setAttribute("YourAttribute",your_value);
     rsi.closeRowSetIterator();How do I make the for(Row row : <RowSet>) example work? Or could someone point me in a direction?
Will

One thing I tried was to make a framework extension class for my ViewObjectImpls
public class PcsViewObjectImpl
extends ViewObjectImpl
implements Iterable<Row>
Set<Row> set = new HashSet<Row>();
public Iterator<Row> getRows()
    return set.iterator();
public Iterator<Row> iterator()
    return getRows();
}AppModuleImpl
    PriceUpdateRowsViewRowImpl priceUpdateRows = (PriceUpdateRowsViewRowImpl)((PriceUpdatesViewRowImpl) priceUpdate).getPriceUpdateRowsView();
    for (Row priceUpdateRow: priceUpdateRows)
    {However, this gives me a class cast exception at runtime. But I would think some kind of extension class would be the way to go ... ?

For loop in a recursion

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