Help: array question

Hi:
I have a question concerning character arrays?
Given a string of letters, how would I find the postion of the letter in the array?
Thanks.

     String arr = "abcdefg";
     char[] charr = arr.toCharArray();
     for(int j = 0 ; j < charr.length; j++) {
      if(charr[j] == 'e') {
       int postion = j;
       System.out.println("The postion of"+" " + charr[postion] + " " + "is in the" +" " + postion + " " + "cell of charr");
    }Is this what you are looking for ???

Similar Messages

I asked a question and accidentally clicked "this helped my question" . how can i delete that

Yeah i really am stupid. i clicked the "this helped my question" button to somthing that didnt help at all! any way to delete it?

No, the point award system does not permit retraction once awarded. You just have to let it go.

Online Help Related Questions

Hi
FYI there is no longer a dedicated place on Microsoft.com for online help related questions.
We are told that VS General (here) is the best place for help questions.
Note that these sites are a good place to get help on help (Microsoft and MVP presence):
http://groups.yahoo.com/group/hatt/ -- for WinHelp & HTML Help & general help discussion
http://tech.groups.yahoo.com/group/MSHelpViewer/ -- For HelpViewer help (VS 2010/2012 help; Windows 8 help)
http://tech.groups.yahoo.com/group/MSHelp2/ -- For MS Help 2.x help (VS 2002/2003/2005/2008 help)
Feel free to ask questions on this thread if you need to. At least then we can find your post.
You can also email the VS/MSDN help team directly -- [email protected]
Please let them know how you feel about the lack of support for Online Help in the forums.
Rob
www.helpmvp.com -- Various Help resources
Rob Chandler Help MVP www.helpwareGroup.com | mshcmigrate.helpmvp.com | hv2.helpmvp.com

Actually, we cannot (at least anymore) directly email the team. I tried and got a reject from the mail server. So, I'm going to post here so I can feel better knowing I said something and then I can get back to programming :-)
Ok, I’ve been developing Windows apps since Win 3.1 (yeah, a long time) and have always admired the Microsoft attitude towards Developers and it’s desire to educate and empower R&D.
So, I’m wondering what’s going on? Why am I being asked to have an account to develop anything for MY own PC? Why am I being asked for my Microsoft account password, repeatedly, when I’m just looking up documentation on UserControl or C3 keywords…
repeatedly? This is nothing short of annoying and it gives me pause and concern about the ecosystem. Is the plan to lock down programmer’s capabilities, knowledge and tools?
I’m involved in the TAP program for Windows 10 and have voiced concerns in the same category with regard to installation and deployment of Universal Apps. Security is not a reasonable excuse. Some of us love to program and actually
control their PCs. We are not planning to sell everything we write on the Windows Store. What happened to programming something cool for your home network or just for friends? We need, and used to have, Microsoft’s support in doing
this sort of thing. Documentation and tools are more important now than ever. I’m saddened to see the direction things are heading…
If there is a sane reason I’m being badgered to ‘log in’ to read .NET documentation every hour, please share. If not, please consider lobbying to get things back on track.
Thanks

"HELP" NEED QUESTION ANSWERED, ":PLEASE":

"HELP" NEED QUESTION ANSWERED, ":PLEASE": OH DEAR GOD SEND SOMEONE TO ME WITH THE ANSWER.

You need patience. This isn't instant answers, you may have to wait for an answer. Your questions are here - locking this thread.
https://support.mozilla.com/en-US/questions/859594 <br />
https://support.mozilla.com/en-US/questions/859665

Quick Array Question..... Please HelP!

Objectives: int mark [] = new int [8]; mark.length;
Write a program that asks the user to enter in 8 student marks between 0 and 100 into an integer array called mark. Stop your entry loop with a sentinel value of -1. Your program will find the average of the marks and also the deviation from the average. Test your program with the following marks: 20, 30, 40, 50, 60, 70, 80, 90, -1. Your output will be:
The average of the marks is 55
Mark Deviation From average
20 -35
30 -25
40 -15
50 -5
60 5
etc etc
The above is the objective and the program I am suppose to write. I am new to arrays and this is a new chapter for me, so I am not really familiar with what I am supposed to do; that is why I am here.
Below is the code that I have written so far; I know it is wrong because it is missing concepts. First problem I have is, i cannot print out all the 8 user inputs under the heading "Mark". The code in the bottom is messed up :(. Secondly, I do not know what syntax I am suppose to type to find the deviation of the input from the average. I know it is supposed to be input - average = deviation, but where and what do i type?!? If anyone can help me, that would be appreciated. Thanks!!!
// The "Chap4Program3" class.
import java.awt.*;
import hsa.Console;
public class Chap4Program3
    static Console c;           // The output console
    public static void main (String [] args)
        c = new Console ();
        int average, sum = 0;
        int mark [] = new int [8];
        c.println ("Please enter in 8 marks between 0 and 100");
        c.println ();
        for (int i = 0 ; i < 8 ; i++)
            mark = c.readInt ();
for (int a = 0 ; a < mark.length ; a++)
sum = sum + mark [a];
c.println ();
average = sum / mark.length;
c.println ("The average of the marks = " + average);
c.print("Mark Deviation from the average");
c.print(mark[]);
} // main method
} // Chap4Program3 class

// The "Chap4Program3" class.
import java.awt.*;
import hsa.Console;
public class Chap4Program3
    static Console c;           // The output console
    public static void main (String [] args)
        c = new Console ();
        int average, deviation, sum = 0;
        int mark [] = new int [8];
        c.println ("Please enter in 8 marks between 0 and 100 or -1 to stop");
        c.println ();
        do
            for (int i = 0 ; i < 8 ; i++)
                mark = c.readInt ();
for (int a = 0 ; a < mark.length ; a++)
sum = sum + mark [a];
c.println ();
while (mark [i] != -1);
average = sum / mark.length;
c.println ("The average of the marks = " + average);
c.println ("Mark Deviation from the average");
for (int i = 0 ; i < 8 ; i++)
c.print (mark [i]);
deviation = (mark [i] - average);
c.println (deviation, 22);
} // main method
} // Chap4Program3 class
Im suppose to stop the ENTRY LOOP with a sentinel value of -1... Im not sure if this is right, but there is one problem for sure.. I get an error when im running the program, it says that while (mark != -1); is wrong, but I do not know why.. It says that [i] is wrong, but that is what the user inputs, and im checking to see if the user inputs -1.. Arghh im so confused!!!!!!!!

Help with array question

hi,
i need some help with this piece of code. wat would it output to the screen?
int [] theArray = { 1,2,3,4,5};
for (int i = 1; i < 5; i++)
System.out.print(theArray * i + "; ");
would it output 1 * 1;
2 * 2;...
thanx
devin

Ok...
1] Your index into the array is off by 1 - remember that array indexing starts from 0.
2] You cannot multiply an array object. The contents? fine , go ahead but NOT the array
so your output should be something like:
operator * cannot be applied to int[] :d
try
int[] theArray = {0,1,2,3,4,5};
for(int i = 1;i<6;i++)
System.out.print(theArray*i+";");
giving you an output of 1;4;9;16;n...
if you were looking for the output stated change
System.out.print(theArray*i+";");
to
System.out.print(theArray[i]+"*"+i+";");done...

Simple Array Question - Help Needed!

Hey people,
I need a line of code that gets the maximum value out of an array.
the array is called LEVELS and contains values [1, 3, 4, 17, 3, 2, 4]. I need a line of code that creates a new variable called MAXLEVEL and finds the largest value within the array.
Thanks,
sean :)

Create a variable. Initialize it to the lowest possible value, like say Integer.MIN_VALUE.
Loop through your array.
For each element, see if it's greater than the current value in the variable. If it is, use it.
When you reach the end of the array, the variable now holds the max value.
How did you think you were going to do it?

Trying to send multiple types in a byte array -- questions?

Hi,
I have a question which I would really appreciate any help on.
I am trying to send a byte array, that contains multiple types using a UDP app. and then receive it on the other end.
So far I have been able to do this using the following code. Please note that I create a new String, Float or Double object to be able to correctly send and receive. Here is the code:
//this is on the client side...
String mymessage ="Here is your stuff from your client" ;
int nbr = 22; Double nbr2 = new Double(1232.11223);
Float nbr3 = new Float(8098098.809808);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(mymessage);
oos.writeInt(nbr);
oos.writeObject(nbr2);
oos.writeObject(nbr3);
oos.close();
byte[] buffer = baos.toByteArray();
socket.send(packet);
//this is on the server side...
byte [] buffer = new byte [5000];
String mymessage = null; int nbr = 0; Double nbr2 = null;
Float nbr3 = null;
mymessage = (String)ois.readObject();
nbr = ois.readInt();
nbr2 = (Double) ois.readObject();
nbr3 = (Float) ois.readObject();
My main question here is that I have to create a new Float and Double object to be able to send and receive this byte array correctly. However, I would like to be able to have to only create 1object, stuff it with the String, int, Float and Double, send it and then correctly receive it on the other end.
So I tried creating another class, and then creating an obj of this class and stuffing it with the 4 types:
public class O_struct{
//the indiv. objects to be sent...
public String mymessage; public int nbr; public Double nbr2;
public Float nbr3;
//construct...
public O_struct(String mymessage_c, int nbr_c, double nbr2_c, float nbr3_c){
my_message = my_message_c;
nbr = nbr_c;
nbr2 = new Double(nbr2_c);
nbr3 = new Float(nbr3_c);
Then in main, using this new class:
in main():
O_struct some_obj_client = new O_struct("Here is your stuff from your client", 22, 1232.1234, 890980980.798);
oos.writeObject(some_obj_client);
oos.close();
send code....according to UDP
However on the receiving side, I am not sure how to be able to correctly retrieve the 4 types. Before I was explicitely creating those objects for sending, then I was casting them again on the receiving side to retrieve then and it does work.
But if I create a O_struct object and cast it as I did before with the indiv objects on the receiving end, I can't get the correct retrievals.
My code, on the server side:
O_struct some_obj_server = new O_struct(null, null, null. null);
some_obj_server = (O_struct)ois.readObject();
My main goal is to be able to send 4 types in a byte array, but the way I have written this code, I have to create a Float and Double obj to be able to send and receive correctly. I would rather not have to directly create these objects, but instead be able to stuff all 4 types into a byte array and then send it and correctly be able to retrieve all the info on the receiver's side.
I might be making this more complicated than needed, but this was the only way I could figure out how to do this and any help will be greatly appreciated.
If there an easier way to do I certainly will appreciate that advise as well.
Thanks.

public class O_struct implements Serializable {
// writing
ObjectOutputStream oos = ...;
O_struct struct = ...;
oos.writeObject(struct);
// reading
ObjectInputStream ois = ...;
O_struct struct = (O_struct)ois.readObject();
I will be sending 1000s of these byte arrays, and I'm sure having to create a new Double or Float on both ends will hinder this.
I am worried that having to create new objs every time it is sending a byte array will affect my application.
That's the wrong way to approach this. You're talking about adding complexity to your code and fuglifying it because you think it might improve performance. But you don't know if it will, or by how much, or even if it needs to be improved.
Personally, I'd guess that the I/O will have a much bigger affect on performance than object creation (which, contrary to popular belief, is generally quite fast now: http://www-128.ibm.com/developerworks/java/library/j-jtp01274.html)
If you think object creation is going to be a problem, then before you go and cock up your real code to work around it, create some tests that measure how fast it is one way vs. the other. Then only use the cock-up if the normal, easier to write and maintain way is too slow AND the cock-up is significantly faster.

Database array questions

Disclaimer: I am new to DB's.
I'm looking at creating a MySQL database to hold tests done on DUTs (each with a specific serial). In theory, each DUT undergoes 3 tests. Each test produces a 401x9 2D array of DBLs. I am not concerned with the write speed to the DB, but I do want to optimize the read of the DB (potentially may need to retrieve 1000+ of these 2D arrays as fast as possible). I have the DB Toolkit; using LV 8.5. Questions:
1. I have seen two different ways to save a 2D array in a DB mentioned: first, writing one row at a time with the DB Insert vi, resulting in a 2D array in a table (which is slow writing) or second, changing the 2D array to a variant and using the DB Insert vi, resulting in a single cell in a table. I know I can use other methods (parameterized vi, sql commands, user defined functions on the DB server, please do comment if you have found drastic performance increase with these methods), but of the two ways of storing a 2D array, can I read a 2D array from a table faster than reading a 2D array from a single cell? Whenever I need this data, I will read it all (i.e. I will never have to search for certain data within these individual 2D arrays)
2. I may have installed the 8.2.1 DB toolkit, because the Database Variant to Data vi/function does not drop onto the Block Diagram when I drag it from the palette, and the Help has ???. I assume this is because it just points to the normal Variant to Data, which in 8.5 is in a subpalette as compared to 8.2.1. Any quick way to fix this?
3. Any other general suggestions for a DB newbie? I've been trying to derive best practices from KB aritcles, this forum, and the web, but there is so much information and so many varying opinions I find it hard to narrow down best practices.
Michael

Hi Miguel,
It looks like you are embarking on a very interesting project. Although you probably have seen many of the following documents, I've linked a few to get you started.
Discussion forum using LabVIEW to read from tables
Developer Zone article about developing a test system
Knowledgebase article about imitations of speed with database toolset
As far as your first question, I would suggest trying out both methods with simple code and testing with a small amount of values to determine which one will be the fastest.
Good luck with your project!
Amanda Howard
Americas Services and Support Recruiting Manager
National Instruments

FLV Array question - final flv file looping

So the first part of my question was kindly and quickly
answered by Rothrock. But I've got a new question that has arisen.
When I set these up as an array it's ignoring the settings in the
parameter field for autorewind which is set to false and it's
looping the last movie file in the array. Is there anyway to avoid
this by adding a snippet of new code to this code below:
import mx.controls.MediaDisplay;
flvURL = new Array();
flvURL[1] = "preroll_live.flv";
flvURL[2] = "atlas.flv";
flvURL[3] = "jones_outro.flv";
counter = 1;
my_FLVplybk.contentPath = flvURL[1];
var listenerObject:Object = new Object();
listenerObject.complete = function(eventObject:Object):Void {
counter++;
if (counter == flvURL) {
counter = 1;
my_FLVplybk.contentPath = flvURL[counter];
my_FLVplybk.addEventListener("complete", listenerObject);
Preferably I'd like to either:
Have the movie reset to an array file of my choice but not
auto play or just Stop the movie on the final frame.
Any help here will be greatly appreciated.
Many thanks!
-Kjup

Anyone have any ideas on this...let me know if you need more
details.
Thanks,
Kjup

Need some java help - arrays

I've been learning java for the past few weeks and I'mstuck with the following question:
Write a short program to store the input values of a user-specified amount of whole numbers and output them in a multipcation matrix form, with correct formatting.
For example, the input of of three numbers 1, 2 and 3 would produce the followinf matrix:
*1 2 3*
*2 4 6*
*3 6 9*
or the input of 4 numbers 3,7, 4 and 9 would produce the following matrix:
*3 7 4 9*
*7 49 28 63*
*4 28 16 36*
*9 63 36 81*
whereby the inner numbers in the grid represent the product of the number on the corresponding top row and left most column, i.e 36 = 9 4*
The user must be initially be allowed to specify how many numbers they wish to enter, followed by the number themselves. You must maked use of an array for this exercise. Ensure the proper formatting rules are adhered to, i.e. that all columns are aligned vertically (right justified). You can assume no input number greater than 100 will be entered.
I was wondering if someone could help me with this?

Or better yet:
[] 3 7 4 9
3 9 21 12 27
7 21 49 28 63
4 12 28 16 36
9 27 63 36 81which is i am sure what you were after flounder, the formatting for some reason kept moving the top row over to the left.
P.S. If the OP is still here...here is a bit of a head start.
public static void main(String[] args) {
       Scanner sc1 = new Scanner(System.in);
       int[] array;
       int x;
       int y;
       System.out.println("How many numbers do you want to enter? ");
       x = sc1.nextInt();
       array = new int[x];
       System.out.println("Please enter your numbers ");
       for (int i=0;i<x;i++){
           y = sc1.nextInt();
           array=y;
//test printing contents of array
System.out.println("--------------");
System.out.println();
System.out.println("OUTPUT");
System.out.println();
System.out.println("--------------");
for(int j=0;j<array.length;j++){
System.out.print(array[j]);

Quick Array Question

Hey,
I was wondering if you folks could help me.
I am going to use arrays for this program, but I can�t seem to get the first point right, it just won�t compile.
Any who...My goal here is to create a program that prompts the user for the number of tests, then the program loops the desired amount of times, each loop the user will be prompted for the student id, name, test score...etc using arrays.
My question is...first off, how do I get it to start...lol, and secondly, how do I input various amounts of strings (i.e. names) into an array...then output them latter. Here is my code thus far.
import javax.swing.JOptionPane;
public class TestScoreFinal {
     public static void main(String[] args){
          // Declarations
          String numTest;
          String testScore;
          double nTest;
          double tScore;
          // Input of Number of Tests
          double[] totTests;
          int numTest = readInt("Enter the Number of Tests ");
          totTests = new double[numTest];
          // FOR loop, will stop when it is equal to the number of tests inputed
          for(int countTest = 0; countTest < nTest; countTest = countTest + 1){
               testScore = JOptionPane.showInputDialog("Please Enter a Test Score: ");
               tScore = Double.parseDouble(testScore);
               // If number is less than zero, the loop ends
               if (tScore < 0){
                    JOptionPane.showMessageDialog(null, "Invaild Test Score!, No Results will be Shown!");
                    break;
               // If Number is greater than 100, the loop ends
               else if (tScore > 100){
                    JOptionPane.showMessageDialog(null, "Invaild Test Score!, No Results will be Shown!");
                    break;
               // If Test score is Valid, we proceed to the Calculations
               else
}I get the following errors...
--------------------Configuration: <Default>--------------------
C:\Documents and Settings\**** ****\Desktop\Hand In\TestScoreFinal.java:17: numTest is already defined in main(java.lang.String[])
int numTest = readInt("Enter the Number of Tests ");
^
C:\Documents and Settings\**** *****Desktop\Hand In\TestScoreFinal.java:17: cannot find symbol
symbol : method readInt(java.lang.String)
location: class TestScoreFinal
int numTest = readInt("Enter the Number of Tests ");
^
C:\Documents and Settings\**** ****\Desktop\Hand In\TestScoreFinal.java:18: incompatible types
found : java.lang.String
required: int
totTests = new double[numTest];
^
3 errors
Process completed.

I lied..god im stupid...final question...
import javax.swing.JOptionPane;
public class TestScoreFinal {
     public static void main(String[] args){
          // Declarations
          int numTest;
          String names;
          String testScore;
          double nTest;
          double tScore;
          // Input of Number of Tests
          double[] totTests;
          String num = JOptionPane.showInputDialog("Enter the Number of Tests");
          numTest = Integer.parseInt(num);
          totTests = new double[numTest];
          // FOR loop, will stop when it is equal to the number of tests inputed
          for(int i = 0; i < totTests.length; i++){
               testScore = JOptionPane.showInputDialog("Please Enter a Test Score: ");
               tScore = Double.parseDouble(testScore);
               String names = JOptionPane.showInputDialog("Enter the Students Name: ");
               String[] name = new String[names];
               // If number is less than zero, the loop ends
               if (tScore < 0){
                    JOptionPane.showMessageDialog(null, "Invaild Test Score!, No Results will be Shown!");
                    break;
               // If Number is greater than 100, the loop ends
               else if (tScore > 100){
                    JOptionPane.showMessageDialog(null, "Invaild Test Score!, No Results will be Shown!");
                    break;
               // If Test score is Valid, we proceed to the Calculations
               else
}what did i do wrong here? im pretty sure it should be working!
--------------------Configuration: <Default>--------------------
C:\Documents and Settings\********Desktop\Hand In\TestScoreFinal.java:30: names is already defined in main(java.lang.String[])
String names = JOptionPane.showInputDialog("Enter the Students Name: ");
^
C:\Documents and Settings\********\Desktop\Hand In\TestScoreFinal.java:31: incompatible types
found : java.lang.String
required: int
String[] name = new String[names];
^
2 errors
Process completed.

Some basic HP Smart Array questions

Hopefully a simple answer to what seems to be a fairly simple question...
If, for example, you have a P800 HP Smart Array with 24 disks and a spare and you want to partition a number of database files across drives to maximise I/O performance (the transaction log file is heavy on writes and the other data and index files are heavy on reads), would it be better to:-
a) Use the 24/25 disks to create one SAS Array and three logical drives:-
SAS Array A with spare - 3 Logical drives
     Logical Drive 1 (1200 Gb, RAID 1+0)
     Logical Drive 2 (1200 Gb, RAID 1+0)
     Logical Drive 3 (1200 Gb, RAID 1+0)
b) Use the 24 disks to create three SAS arrays each with one Logical Drive:-
SAS Array A & Logical Drive 1  (1200 Gb, RAID 1+0)
SAS Array B & Logical Drive 1 (1200 Gb, RAID 1+0)
SAS Array C & Logical Drive 1  (1200 Gb, RAID 1+0)
Not sure how the Spare disk fits into Option B?
Anyway, if the objective is to maximize I/O performance, is it Option A or B?
The phrase, 'logical drive'... Does this mean that I/O is partitioned at the logical drive level or does the HP Smart array controller spread the I/O across the SAS Array? If I look at I/O counters (eg. Perfmon on Windows Server), I can see that Logical drives as in Option A seem to be separated completely as one logical drive could have a disk queue and other logical drives on top of the same SAS array will not have a disk queue.  What are the prose and cons of Option A and B? Understanding these issues will help me to come up with the right configuration in terms of arrrays and logical drives.
Thanks in advance,
Clive

Hi, Clive:
I'm not so sure yours is a fairly simple question for the HP consumer notebook forum.
You may want to copy and paste your post in the HP Business Support Forum -- Disk Array section.
http://h30499.www3.hp.com/t5/Disk-Array/bd-p/itrc-195

Associative Array Question

Hi All,
I've searched through this forum trying to find information I'm needing on associative arrays with a varchar2 index without luck. What I'm looking for is a way to get the index or "key" values of the array without knowing what they are. Meaning, I wouldn't have to know the index value when designing the array but would be able to utilize them values at runtime. For those familiar with Java it would be like calling the keySet() method from a Map object.
So, if I have an array of TYPE COLUMN_ARRAY IS TABLE OF VARCHAR2(4000) INDEX BY VARCHAR2(100) is there any way to dynamically get the index values without knowing what they are?
Any help is appreciated.
Thanks

Thanks for the response.
I am aware of using FIRST and NEXT for iterating the array but can I extract the index value of the current element into a variable when I don't know what the index value is at runtime ?
Thanks

Page level help text question

APEX - 4
DB version - 10g
Web server architecture - OHS
Browser - IE8
Theme - 5
I know how to set and display help text for a page item, and I see there is the option to add help text at the page level, but how does the user accessing the screen see the page level help text?
I was thinking it might be a good way to add user help guide information at the page level.
Thank you for any assistance.

I know how to set and display help text for a page item, and I see there is the option to add help text at the page level, but how does the user accessing the screen see the page level help text?Using a Help page and region accessed via a help link (e.g. a navigation bar entry), or using the <tt>apex_application.help</tt> API method in a PL/SQL Dynamic Content region.
This is covered in the APEX documentation which should be consulted before posting a question here.

Help: array question

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