Shift elements in arrays

I have 5 arrays: array_0 to array_4
array_0 contains 5 elements which are in double type:
array_0 = ( 25.20 , 32.85, 4.24, 5.65, 4.65)
How can I store in array_1 to array_4 with the same value of array_0 but by shifting the position by 1 to 4 respectively :
array_1 = (4.65, 25.20, 32.85, 4.24, 5.65)
array_2 = (5.65, 4.65, 25.20, 32.85, 4.24)
array_3 = (4.24, 5.65, 4.65, 25.20, 32.85)
array_4 = (32.85, 4.24, 5.65, 4.65, 25.20)
Thanks...

Otherwise known as the brute force approach. :-)okay then, :):class ArrayShift {
     static double array1[] = { 1, 2, 3, 4, 5 };
     static double array2[] = new double[5];
     static {
          for(int k = 0; k < array1.length; k++){
               array2[ k ] = array1[ (k + (array1.length - 1)) % array1.length ];
               System.out.println(array2[k] + ", ");
          System.exit(0);
}

Similar Messages

Merging elements of array

Hi,
I am new to programming.
I have a sensor that sends a data stream through a serial port. I have collect all that data in a 1D unsigned byte array. Now, lets say my 1-D array is [12][45][65][12]...... where each "[ ]" is a element of the array. Now to make sense of this data what i need to do is merge two elements the array and multipy it by 2/(2^15). i.e. My converted data should by [1245]*2/(2^15). Basically 2 bytes together makes sense. I can do a simple add of each element. Also the other problem is,data from the sensor is a stored as the 1-D array of unsigned byte. However, the converted data is supposed to be signed 16-bit integer.
Please give any suggestions on how to go about doing this.
Siddhant Shah

Another option is "decimate&Join". (Here it is easy to change the byte order if needed).
Message Edited by altenbach on 12-15-2008 06:28 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
8bitTo16BitByteOrder.png ‏5 KB

The prefix mx for element mx:Array is not bound

Hi All
I have a component:
<?xml version="1.0" encoding="utf-8"?>
<mx:Array id="arr">
    <mx:Object label="Flex"
      thumbnailImage="http:/someURL"
      fullImage="http://someURL" />
</mx:Array>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml">
</mx:Canvas>
This gives me an error
The prefix "mx" for element "mx:Array" is not bound
I need a root element here, but I cannot use mx:Canvas, what would be the best choice?
cheers
Luca

Hi Luca,
Try to put the Array inside your canvas rather than outside ...
<?xml version="1.0" encoding="utf-8"?
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Array id="arr">
    <mx:Object label="Flex"
      thumbnailImage="http:/someURL"
      fullImage="http://someURL" />
</mx:Array>
</mx:Canvas>
Why you dont want to use mx:Canvas as root tag of your component.. ?? However which ever component you use try to put the <mx:Array/> inside your root tag of your component, otherwise you will be thrown the same error as mentioned. The error occurs as the the compiler doesn't recognize the namespace mx for the array since you declared it outside the root tag of your component.
Thanks,
Bhasker

Remove element from array

hi
if i have an array
eg
int[] array = {4,2,1,2,1};
how to i remove the index 2 from it and create a new array?
thanks

You can't remove the element--an array's size is fixed at creation.
If you want a new array, create a new one that's one element smaller, then use System.arrayCopy to copy the elements you want to keep.

How can i retrieve missing element in array

how can i retrieve missing element in arrays if array length is exceeded

Not sure about what the question means, but could it be that OP is not aware that the first element in an array is at index 0 (not 1) ?
<a href="http://java.sun.com/docs/books/tutorial/java/nutsandbolts/arrays.html" style="background:url(http://java.sun.com/docs/books/tutorial/figures/java/objects-tenElementArray.gif) no-repeat; width:400; height:145;"></a>

Shifting elements in multidementional array

Hello,
I'm working on a boardgame project which uses an int[][] to represent the board. The elements in this array are numbers which represent vehicles. The equal numbers are one vehicle. A vehicle can perform a step left/right, or a step up/down (if there is no other vehicle blocking the way of course).
I've read about the arraycopy method, but I don't know how to use it with an array of arrays.
So an example of the matrix would look like this:
111002
300502
344502
300500
000000
666000
After a step of one vehicle the matrix could be:
011102
300502
344502
300500
000000
666000
I need to get matrices for all possible moves, for all vehicles.
I couldn't find any documentation about the use of copyarray with an array of arrays. Hope someone can point me in the right direction.
Thanks in advance

Ceylor wrote:
Hello all,
thanks very much for the quick replies.
prometheuzz, I've read the topic you mentioned and your explanation is great. Your UML makes it very clear.You're welcome.
I allready use OOP as much as possible. In my project I use a playField class (the board, also GUI), a node class (extends from rectangle, a cell in the field), a vehicle class (contains a collection of nodes and some other properties), a class for my algoritm and a state class.Good to hear that.
The state class is used for storing all possible states of the playField. (ie all valid moves). These states are needed for a shortest path algoritm, and are not automatically a state the playField gets. Therefor I can't use the vehicles stored in the playField class because this class only contains the initial state of the game. The playField only get's updated when the algoritm is done and a shortest path is found. So would it be a good solution to store a collection of vehicles inside my state class?I'm don't quite follow you here, I'm afraid.
The thing I'm a bit worried about is that there can be a lot of states. When adding the vehicles to each state object, doesn't this slow things down?
...Don't worry about inefficient code too soon. First get your logic correct: check your algorithm against a small puzzle, ensure that it works. After that, try some larger puzzles to see if a solution is found within the required time frame. If it takes too long, only then adjust your algorithm.
Feel free to post back if you have any questions.
Good luck.

How to change a specific element in array

hi
i have an 1d intialized array
i want to take the existed array and for example add +1 for the 5th element
how can it be done?
thanks
Solved!
Go to Solution.

In a typical application you would want to repeat that operation to form a simple histogram. This is most easily achieved by keeping the array in a shift register and repeating the operation in a FOR loop until all data is processed.
My very simple example from a few years ago can be found here. In this case we are counting the number of occurences of small integers in a 1D array. Modify as needed.
LabVIEW Champion . Do more with less code and in less time .

Swap element in array

I am trying to control a screw elevator with labview. I have an array which holds the values for current lift position. Once the lift is at a new position I need to overwrite the old position of the lift with the new value in the array. I went through all the array commands and dont think anyone is going to work. I am using labview 7.0

Replace Array Subset should work. You can use it for single elements - one element is a subset of the array. Just feed it the index of the element you want to overwrite and the new value. You may also need to put the array into a shift register.
Lynn

How to disable an element of array?

Hi,
Here i have written VI that will make an array of meaningfull data, for example: data pattern 23 16 16 24
So whenever two consecutive 16 occurs, VI will delete one 16 from data pattern. But in my case wht problem i am facing is:
Whenever it deletes 16 from data pattern, it will show 0 in place of 16 but i need that cell fully disabled unless this 0 will count into mu data pattern.
So i am trying to use disable property node for greying that particular cell or can any tell me why 0 is coming into array when it deletes 16 from it.
Puneet
CLA 2014
CCVID 2014
Solved!
Go to Solution.
Attachments:
recieve.vi ‏65 KB

Hi Puneet,
from what I see in your screenshot the described behaviour is resulting from an unhealthy combination of using (hell a lot of) locals in combination with "use default if unwired" case structure output tunnels
Remove locals (you already have a shift register, so use a wire instead!), use more descriptive names than "array", wire all output tunnels to avoid unwanted behaviour of your vi...
Why do you compare with an array (in your for loop) when you only need the result for the first element? Compare with scalar instead...
Why is "DLE Check" of type DBL? You only seem to use it as integer...
Why do you write to terminal "Array" and a local "Array" after the FOR loop? (Here is probably the root of the problem!) Only one of the write operations will be effective and you don't know which one...(possible explanation: the local array gets an array formed by autoindexing. So this array contains data for each iteration including an zero [because use of "default if unwired"] when you initially wanted to delete that very element!)
Aditional note:
Next time you attach a screenshot please use a picture format like PNG (as long as you don't use BMP)!
Message Edited by GerdW on 05-17-2009 11:03 AM
Message Edited by GerdW on 05-17-2009 11:05 AM
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

How do I search and return multiple elements of array quickly (like Matlab find)?

Hi, I am a fairly experienced Labview programmer, and I have always wondered if there is a way to quickly search arrays for multiple elements that meet a selection criteria, equivalent to the Matlab find command. While my inability to do this in Labview has always bugged me, I now have an application that requires this ability and I need to find a solution.
The fastest way that I have found to do this in labview is to perform comparisons on vectors of data, and then use the resulting Boolean vector to parse the array using a for loop and shift registers. I have attached a vi snippet of a benchmarking vi for one of the simple searches I need to do. On my laptop this search takes about 600ms. In comparison, the equivalent in Matlab:
newArray=oldArray(find(oldArray(:,4)./oldArray(:,2)>1.5),;
executes in about 1.2ms. So, the way that I am doing this in Labview is only 400 times slower
Needless to say, I need to do these types of searches many many times, and those 599 extra ms start to add up pretty quickly!
Thanks for your help,
Aaron
Solved!
Go to Solution.
Attachments:
benchmarkSearch.png ‏641 KB

Hi Aaron,
the slowest part is probably the "build array" node in the loop.
Try this:
Define an array of same size as input data (or simply use a copy of it) and wire that to the shift register. Keep a counter of found rows in the loop. Use IndexArray and ReplaceArraySubset in the loop to move the found rows to beginning of array (overwrite "bad" rows). After the loop simply ReshapeArray to the number of found rows...
Sorry, don't have LV(2009) at hand to edit your snippet.
Message Edited by GerdW on 11-20-2009 08:27 PM
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Web service proxy receiving single element in array

I've generated a web service proxy over a web service and expect to get multiple elements returned from the web service. However when I excute the proxy I receive only the first element. Testing the web service with the same parameters on the application server shows that I should be receiving 3 elements in total. Not sure where the disconnect is in generating the response message within the proxy. Any suggestions is appreciated.

Are you looking for SOAP ENC Array feature? Which version are you using 10134 or 11g?

Dynamically create empty mcs and asign elements from array and loadmovie

I'm creating an educational game for my school students.
A little boy is flying through the city when he encounters objects flying from left to right.
He hears a SOUND eg: Dog - he must go and click the dog image with the flying cursor. There are at least 5 DIFFERENT objects that should be flying on the screen. There could be various of them at any one time.
I have the roots of the images in an xml file. And the actual swf are in a file called IMAGE and the sounds in SOUND.
My problem is that most tutorials I see use the attachmovie method but I don't want to put all the swf's in the library as there are hundreds.
I have to use the loadmovie method.
I take it I have to loop through the array and assign each element to an empty movieclip which in turn is in the loop so you get 5 empty clips - I will use i (index). It doesn't seem to be working. I shall keep trying and post back here if I get any luck but I'm running out of ideas.
Then the objects have to float across the screen. Don't know whether to use tween object or onEnterFrame handler or other. AND someone has mentioned using setinterval to "spit out" the objects.
BUT if I have five flying across the screen I'm left without clips to stick in any more.
Oh my head hurts but I will keep going.
CHEERS if any help is around. This should be quite a standard thng for game developpers. Code at the moment
function loadEnemies():Void {
enemy_xml = new XML();
enemy_xml.ignoreWhite = true;
enemy_xml.onLoad = function(success:Boolean) {
if (success) {
_root.parseEnemyXML();
//enemy_xml.load("level_"+level+".xml");
enemy_xml.load("data/animal_catch.xml");
function parseEnemyXML():Void {
rows = enemy_xml.firstChild.childNodes.length;
for (var i:Number = 0; i<rows; i++) {
var row_string:String = String(enemy_xml.firstChild.childNodes[i].firstChild.firstChild);
_root["row_"+i+"_array"] = row_string; //MAIN ARRAY holds an array images/dog_a.swf/ images/cat_a.swf etc... all five
_root.createEmptyMovieClip("enemyObjects", 1);
enemyObjects.createEmptyMovieClip("holder_"+i, i);
_root["object"+i] = new Sound(enemyObjects["holder_"+i]);
trace(row_string);
loadMovie["row_"+i+"_array"], ["holder_"+i]
if (level == 1) {
alerts_mc.play();
} else {
currRow = 0;
rowCounter = 0;
OK got to about here BUT
a. I started to get confused around the createEmptyMovieClip part
b. I KNOW I shouldn't have Sound(enemyObjetcs etc... BUT I copied the code from a tutorial and I don't know what to replace it with.
I'm close but I need a little polishing.

It doesn't do you much good to work with borrowed code that you do not understand. Your best bet will be to start small, creating one functional piece of the puzzle at a time, and work your way up. Start with making sure you are loading and parsing the xml properly, then set about loading the external content, then see about making that content move around, etc...
In the code you show, your loadMovie line of code does not resemble anything I have seen before, looking more like (but not quite like) a multi-dimensional array element than a loadMovie() function call. If you find you need to have control of the items as soon as they load, then you should consider using MovieClipLoader.loadClip instead of loadMovie. The MovieClipLoader class provides features, such as to be able to determine when items have fully loaded.

Add element in array

Hi,
I have one String array.
I need to create another String array with the content of 1st array and additional 1st element in the 2nd array with "Product" text.
2nd array[0] = Product;
How do i do it
Thanks

String[] array1 = {"1", "2", "3"};
String[] array2 = {"4", "5"};
String[] array3 = new String[array1.length+array2.length];
System.arraycopy(array1, 0, array3, 0, array1.length);
System.arraycopy(array2, 0, array3, array1.length, array2.length);
here, the array3 will have all the elements in order ie, 1,2,3,4,5.
In case you need to use array2, assign array3 to array2 ie, array2 = array3
Hope that helps.
Regards,
Sumant

Sort Second Element in Array of Strict Type Def Clusters

I need to sort the an array of strict type def clusters by the second or third element in the cluster. In the past I have used 1-D array sort and sorted by the first element of the cluster. When I need to sort by the second, third, or fourth element of the cluster I just break down the cluster and rebuild it placing the desired sort element in the first position of the new cluster. This works for simple tasks and clusters, but as the cluster gets more complicated this becomes a pain to do this. There must be a cleaner way to sort by other elements within the original array of strict type def clusters. Has anyone succeeded in doing this a different way?

Hello,
Here's the way I would do it...just create a new cluster array, where each cluster contains two elements...the unbundled item you want to sort by, and the cluster itself. Then sort the new cluster array, then unbundle the sorted cluster array to get the original clusters (now sorted). Here is a screenshot:
There may be a better way, but this is the first thing I thought of.
-D
Message Edited by Darren on 03-16-200610:00 AM
Darren Nattinger, CLA
LabVIEW Artisan and Nugget Penman
Attachments:
Sorted_cluster.jpg ‏30 KB

How to add all element of array?

1-D array has N number of element .i want to sum all the element ,and the result is a number.
can you give me some example?
thanks.

Just use the "Add Array Elements"-function located in the Numeric palette.
Message Edited by becktho on 02-21-2006 12:58 PM
Using LV8.0
Don't be afraid to rate a good answer...
Attachments:
AddArrayElements.PNG ‏14 KB

Shift elements in arrays

Similar Messages

Maybe you are looking for