A string into a fixed sized array.

Hello;
I am tryig to implement a method that consumes a string that is made up of possible integers (for example String s = "1 2 3 4 5"; ) and returns it as an array such that the returned array will be {1,2,3,4,5} with size 5. This means it has to paste each number character that is not empty as integer and put them to the array.
How can I achieve this?
cheers.
Edited by: Odinn on Jan 9, 2009 6:26 AM

Hm ... I'm not entirely clear about the requirements, so what would happen to the following inputs:
"12 34"
"12a34"
"a"But basically you'll probably want String.split(), Integer.parseInt() and a loop.

Similar Messages

Fixed-sized array

Hi all, I am after a bit of help.
I have a fixed sized array of 11. Each position is a month.
I need a variable set to 0, and the system searches through the array and if the number is bigger than the current highest figure passes it to it. When it gets to the end it prints out the position of the highest figure. It has to be done using a for loop also.
Here is an example that I've been told is going along the right lines, although I know there are a few obvious mistakes, am I right in using the length() method?
int highest = 0;
for (int index = 0; index <= mancData.length; index++)
System.out.println(mancData [highest];)
Sorry that it's very long winded not the best of explaining things.
Thanks in advance.

public class Rainfall
    // Comment
    private double[] mancData;
     * Constructor that state the rainfall for each month.
    public Rainfall()
        mancData = new double[12];
     * Method to populate the Arraylist.
    public void populate()
        mancData[0] = 187.3;
        mancData[1] = 234.4;
        mancData[2] = 219.9;
        mancData[3] = 323.7;
        mancData[4] = 256.7;
        mancData[5] = 164.2;
        mancData[6] = 126.6;
        mancData[7] = 98.6;
        mancData[8] = 149.0;
        mancData[9] = 198.9;
        mancData[10] = 254.7;
        mancData[11] = 221.5;
}That's my code now, yeah sorry Array of size 12, not 11. :)
I need it to search through the array and at the end print out the position of the highest rainfall, which is position 3.

"converting strings into integers in a array"

I'm really left scrating my head trying to figure this out.
What I have right now is this
public class NameManager
     private names[] collection; // collection of names
     private int count;
     public NameManager() // Creating an array which for now is empty
          collection = new names[1000];
          count = 0;
          String [] collection = {"boston", "Springfield", "New Haven",
                    "New York", "Albany"};
Its a namemanager for my road trip project which will be sort of like mapquest. What it does, or it's supposed to do is I have a array of names of cities, that represented as strings, in a array called, collection. What my proffeser wants me to do is turn the strings into integers, so in this elements in the array can be referenced .
It's probably so easy that I'll want to kick myself when I find out how to do it , but for whatever reason , all the information have found on the internet seems to go right over
If any body can give some idea of how to turn the string you see above into a set of intege s I would be so grateful.

turn the string into the index in the array
i.e.
boston => 0
springfield => 1
New Haven => 2
New York => 3
Albany => 4I should've mention this before but I need the names to go along with the numbers.
This is the directions from my proffesser, I know it's not the easiest to understand
but hopefully It will give you a better idea of what I'm talking about.
A name manager. This object turns strings into numbers. Every time a name is added to the name manager, it is checked to see if it has already been seen. If so, return the number previously assigned to the name. If not, increment the "number of known names" and return this number as well as remember the string for future reference. You can assume that there will be no more than 1000 names in the manager. Each name is a string.
A city. A city is a simple object: the city has a name and a number (at present).
I got most of this part done it just strings integers part that's getting me.

Is there an easy way to convert a long string into an array?

I can convert a long string into a 1-d array by parsing and using build array, but I would like to know if there is a function to make this easier.
For example:
from/   aaaaaaaabbbbbbbbccccccccdddddddd         (string of ascii)
to/       an array that is 1-d with each element having eight characters
          aaaaaaaa
          bbbbbbbb
          cccccccc
          dddddddd
Thank you.
Solved!
Go to Solution.

Try something like this:
(If you can guarantee that the string length is an integer multiple of 8, you an drop the two triangular modes in the upper left. )
Message Edited by altenbach on 03-14-2010 06:40 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
ChopString.png ‏9 KB

How can i store values from my String into Array

Hi guys
i wants to store all the values from my string into an array,,,, after converting them into intergers,,,, how i can do this becs i have a peice of code which just give me a value of a character at time,,,,charat(2)...BUT i want to the values from String to store in an Array
here is my peice of code which i m using for 1 char at time
int[] ExampleArray2 = new int[24];
String tempci = "Battle of Midway";
for(int i=0;i>=tempci.length();i++)
int ascii = tempci.charAt(i); //Get ascii value for the first character.

public class d1
     public static final void main( String args[] )
          int[] ExampleArray2 = new int[24];
          String tempci = "Battle of Midway";
          for(int i=0;i<tempci.length();i++)
               int ascii = tempci.charAt(i);
               ExampleArray2=ascii;
          for(int i=0;i<ExampleArray2.length;i++)
               System.out.println(ExampleArray2[i]);

How to put a String into a byte array

How can i put a String into a byte array byte[]. So that i can send it to the serial port for output to an LCD display. Cheers David

javadocs for String
getBytes
public byte[] getBytes()
Encodes this String into a sequence of bytes using the platform's default charset, storing the result into a new byte array.
Returns:
The resultant byte arraySince:
JDK1.1

Splitting and type casting huge string into arrays

Hello,
I'm developing an application which is supposed to read measurement files. Files contain I16 and SGL data which is type casted into string. I16 data is data from analog input and SGL is from CAN-bus data in channel form. CAN and analog data is recorded using same scan rate.
For example, if we have 6 analog channels and 2 CAN channels string will be (A represents analog and C represents CAN):
A1 A2 A3 A4 A5 A6 C1 C2 A1 A2 A3 A4 A5 A6 C1 C2 A1 A2 .... and so on
Anyway, I have problems reading this data fast enough into arrays. Most obvious solution to me was to use shift registers and split string in for loop. I created a for loop with two inner for loops. Number of scans to read from string is wired to N terminal of the outermost loop. Shift register is initialized with string read from file.
First of the inner loops reads analog input data. Number of analog channels is wired to its N terminal. It's using split string to read 2 bytes at a time and then type casts data to I16. Rest of the string is wired to shift register. When every I16 channel from scan is read, rest of the string is passed to shift register of the second for loop.
Second loop is for reading CAN channels. It's similar to first loop except data is read 4 bytes at a time and type casted to SGL. When every CAN channel from scan is read, rest of the string is passed to shift register of the outermost loop. Outputs of type cast functions are tunneled out of loops to produce 2D arrays.
This way reading about 500 KB of data can take for example tens of seconds depending on PC and number of channels. That's way too long as we want to read several megabytes at a time.
I created also an example with one inner loop and all data is type casted to I16. That is extremely fast when compared to two inner loops!
Then I also made a test with two inner loops where I replaced shift register and split string with string subset. That's also faster than two inner loops + shift register, but still not fast enough. Any improvement ideas are highly appreciated. Shift register example attached (LV 7.1)
Thanks in advance,
Jakke Palonen
Attachments:
String to I16 and SGL arrays.vi ‏39 KB

OK, there is clearly room for improvement. I did some timing and my two above suggestions are already about 100x faster than yours. A few teeaks led to a version that is now over 500x faster than the original code.
A few timings on my rather slow computer (1GHz PIII Laptop) are shown on the front panel. For example with 10000 scans (~160kB data as 6+2) my new fastest version (Reshape II) takes 14 ms versus the original 7200ms! It can do 100000 scans (1.6MB data) in under 200 ms and 1000000 scans (15MB data) in under 2 seconds.
I am sure the code could be further improved. I recommend the Reshape II algoritm. It is fastest and can deal with variable channel counts. Modify as needed.
Attached is a LabVIEW 7.1 version of the benchmarking code, containing all algorithms. I have verified that all algorithms produce the same result (with the limitation that the cluster version only works for 6*I16+2*SGL data, of course). Remember that the reshape function is extremely efficient, because it does not move the data in memory. I have some ideas for further improvements, but this should get you going.
Message Edited by altenbach on 08-05-2005 03:06 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
StringI16SGLCastingTimer.png ‏48 KB
StringtoI16andSGLArraysMODTimer.vi ‏120 KB

Convert an array of strings into a single string

Hi
I am having trouble trying to figure out how to convert an array of strings into a single string.
I am taking serial data via serial read in a loop to improve data transfer. This means I am taking the data in chunks and these chunks are being dumped into an array. However I want to combine all elements in the array into a single string (should be easy but I can't seem to make it work).
In addition to this I would also like to then split the string by the comma separator so if any advice could be given on this it would be much appreciated.
Many Thanks
Ashley.

Well, you don't even need to create the intermediary string array, right? This does exactly the same as CCs attachment:
Back to your serial code:
Why don't you built the array at the loop boundary? Same result.
You could even built the string directly as shown here.
Message Edited by altenbach on 12-20-2005 09:39 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
autoindexing.png ‏5 KB
concatenate.png ‏5 KB
StringToU32Array.png ‏3 KB

How do I split a comma delimited string into an array.

I have a string that I am passing into a function that is Comma delimited. I want to split the string into an array. Is there a way to do this.
Thanks in advance.

trouble confirmed on 10gR1 and 10gR2
works with 'a,b,c' and also with ' "1" , "2" , "3" '
does not work with '1,2,3'
throwing ORA-6512

How to break up a String into multiple array Strings?

How do I break up a string into a bunch of String arrays after the line ends.
For example,
JTextArea area = new JTextArea();
this is a string that i have entered in the area declared above
now here is another sting that is in the same string/text area
this is all being placed in one text field
Sting input = area.getText();
now how do I break that up into an array of strings after each line ends?

Ok I tested it out and it works.
So for future refrence to those that come by the same problem I had:
To split up a string when using a textfield or textarea so that you can store seperate sections of the string based on sperate lines, using the following code:
String text = area.getText() ;
String[] lines = text.split("\n") ;
This will store the following
this is all one
entered string
into two arrays
Cheers{
Edited by: watwatacrazy on Oct 21, 2008 11:06 AM
Edited by: watwatacrazy on Oct 21, 2008 11:16 AM
Edited by: watwatacrazy on Oct 21, 2008 11:16 AM

Add an array of strings into ArrayList

Hi Guys
I would like to add an array of strings into an ArrayList, which i have implemented by using the following code:-
String[] strReturnWords = getInput2(line);
List.add(strReturnWords);strReturnWords returns an array of Strings.
How do i retrieve the array of strings from the ArrayList. I have tried
String[i] strString = List.toString();Am i doing this correctly, are their any other ways??
Many thanks
Jason

That should work.NO. That wont work AT ALL.
This:
String[] arrayOfString = new String[listName.size()];Is not right. The number of elements in the list is MUCH different
then the size of the array which is an element in the list.
This:
arrayOfStrings[ i] = (String)listName.get(i);Will fail. The list contains an Object of StringArray not an Object of String.
import java.util.*;
public class StringList{
public static void main(String[] args){
     String text = "this is some text";
     String[] words = text.split("\\s+");
     ArrayList list = new ArrayList();
     list.add(words);
     String[] array = (String[])list.get(0);
     for(int i = 0; i < array.length; i++){
     System.out.println("Word: " + array);

Convert HEX String into HEX Array

Hi!
Probably a silly question, but I am looking for a way to convert a ROM ID number such as "5E03C21000BA" into an short hexadecimal array.
The way to do this in C would probably be
char[17] str_romID = "5E03C21000BA";
uchar[8] romID;
sscanf(str_romID, "%02X%02X%02X%02X%02X%02X%02X%02X",
&romID[0], &romID[1], &romID[2], &romID[3],
&romID[4], &romID[5], &romID[6], &romID[7]);
but I can't seem to find a way to do this in LabVIEW. I would be very grateful if you could help me out with a sample program. Thanks ever so much!
Stefan

Hello Blondchen,
I have attached a picture to my last explanation. This example doesn't take care of strings with an uneven number of chars!
My array has only 6 numbers as you only gave a string with 12 chars... That's what I asked before: how should we know where to split your string to the single numbers? Normally I would take 2 chars to form a byte (as I did in the example). If you give me 16 chars I give you 8 bytes...
I also think your C byte array will be an U8 array in LabView. If you REALLY need I8 numbers you can change the default type of the "hex to string" or cast to I8 (advanced->data manipulation->type cast) after the conversion.
Best regards,
GerdW
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
Attachments:
ConvertHexHex.png ‏13 KB

[C] Trying to sort string into reverse order ... Blank. [SOLVED]

Here are the pre-processors:
#include <stdio.h>
#include <string.h>
Here are the global variables:
char output[999];
Here's the function to sort string to reverse order (I THINK THE PROBLEM IS HERE):
char output[999];
char *sort_reverse(const char *str)
int i, j = 0;
for (i = strlen(str); i > 0; i--)
output[j] = str[i];
j++;
return output;
And, function int main(void):
int main(void)
printf("Reverse of \"Hello\": %s\n", sort_reverse("Hello"));
return 0;
The output is:
Reverse of "Hello":
Why is that? how can i fix that?
Last edited by milo64 (2013-03-28 01:45:46)

Instead of the global char output[999] wich is really big, you could allocate a perfectly sized array with calloc - like this in the sort_reverse function:
char *output = calloc(strlen(input_string), sizeof(char));
and in main program:
char *reversed_string = sort_reverse("Whatever");
printf("%s\n", reversed_string);
//Remember to free reversed_string with
free(reversed_string);
//Since its allocated in the heap with calloc()
Try check man-page for calloc, it will zero out the bytes aswell, then you wont have to worry about setting the last element to '\0'.
NOTE: you have to iterate with "strlen(input_string) - 1" otherwise you will overwrite the needed '\0'
EDIT: As strlen excludes the '\0' in original string, then you have to make space for that by adding one to strlen return value so:
char *output = calloc(strlen(input_string) + 1, sizeof(char));
Last edited by Boogie (2013-04-05 09:46:12)

Creating dynamic sized arrays and filling them automatically on speedy 33

hi all,
I am trying to create dynamic sized arrays on Speedy-33. Specifically, depending on the user input, I want to be able to create
arrays with 128 or 256 elements and fill them automatically. However,
array constant element is fixed for Speedy 33; thus I have to manually set the
size of the array with the mouse and enter the values in to the array by
myself. I want to make this tedious process automatic. Would this be possible? thanks so much for comments!
~casiopea

Casiopea,
There is a really great article on using arrays with LabVIEW DSC which can be found here:
How Can I Be Successful With Arrays In the LabVIEW DSP Module?
One of the biggest things that should be noted about DSP is that there is no dynamic memory allocation. Your array size must be fixed, and thus, your array needs to be initialized by using a constant.
An easy way to initialize an array constant that has many elements that are all the same is to simply create a numeric constant that has the value that you want. Then, create a new blank array constant and drag the numeric into it. In the index input for the array constant, type in the index of the last element that you want to be initialized. Then type in the value in the element that is displayed and all of the elements before it will be initialized to the default value of the numeric constant that you dropped into the array constant. I hope this helps. I would really recommend reading through that article, as it has a lot of great information about using arrays with DSC.
Brian Coalson
Software Engineer
National Instruments

How do I convert a 1-D array of cluster of 5 elements into a 2-D array of numbers? (history data from a chart)

Hello,
in my vi I have a chart with 5 Plots displaying measurement data.
The user should be able to save all the history data from the chart at anytime. (e.g. the user watches the chart and some event happens, then he presses a "save"-button)
I know, that I can read out the history data with a property node. That is not the problem. The problem is, how do I handle the data? The type of the history data is a 1-D array of cluster of 5 elements.
I have to convert that data somehow into a 2 D-array of numbers or strings, so that I can easily save it in a text-file.
How do I convert a 1-D array of cluster of 5 elements into a 2-D array of numbers?
I use LabVIEW 7.1
Johannes
Greetings Johannes
Using LabVIEW 7.1 and 2009 recently
Solved!
Go to Solution.

Gerd,
thank you for the quick response and the easy solution.
Look what I did in the meantime. I solved the problem too, but muuuch more complicate :-)
And I have converted the numbers to strings, so that I can easily write them into a spreasheet file.
Johannes
Message Edited by johanneshoer on 04-28-2009 10:39 AM
Greetings Johannes
Using LabVIEW 7.1 and 2009 recently
Attachments:
SaveChartHistory.JPG ‏57 KB
SaveChartHistory.JPG ‏57 KB

A string into a fixed sized array.

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