How to delete an element in an array...(simple way)

hi,
Newbie here... please help how to delete an element in an array list?
there are alot of codes but they're complicated for a newbie like me..
(simple codes would be better ..:) thank you...

makk_88 wrote:
since u want the simple method.....
just overrite the position of the element that need to be deleted with the next element in the array..
by doing this, element need to be deleted will not be accessibe..
i think u got..what i'm saying.
thnx..Mak,
Say we wish to delete the second element of an array a[1]. Do you really believe that a[1] = a[2] somehow magically deletes a[1]? I really don't think so Tim.
Two eggs, minus 1, equals two eggs? Interesting theory, but I think you're probably wrong.
*@OP:* My advise is just use an ArrayList.
Cheers. Keith.

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How to show the elements of an array, when the array size changes every loop?
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show elements.PNG ‏184 KB

Basically it is (at least in LV8.0). There is a property "Number of Rows" which sets the number of visible rows. If your 1D array is placed horizontally, use "Number of Columns".
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HOW TO DELETE DUPLICATE ELEMENT IN A VECTOR

Hi everybody!
If I've a vector like this vectA={apple,orange,grape,apple,apple,banana}
and I want final result be vectB={apple,orange,grape,banana}.
How should I compare each element in vectA and delete duplicate element. Like here duplicated element is apple. Only one apple remain in the vectB.
Any help,
Thanks.

Hello all. Good question and good answers, but I would like to elaborate.
To begin with, you specifically asked to map the following:
{apple,orange,grape,apple,apple,banana} ==> {apple,orange,grape,banana}
Both of cotton.m's solutions do NOT do this, unfortunately. They are both useful in particular cases though, so think about what you're trying to do:
cotton.m's first solution is best if order does not matter. In fact, as flounder first stated, whenever order doesn't matter, your most efficient bet is to use a Set instead of a List (or Vector) anyways.
Set vectB = new HashSet(vectA);This code maps to {banana, orange, grape, apple}, because HashSets are "randomly" ordered.
cotton.m's second solution is good if you want to impose NEW ordering on the List.
Set vectB = new TreeSet(vectA);This code maps to {apple, banana, grape, orange}, because TreeSet uses alphabetical-order on Strings by default.
java_2006, your solution is the most correct, but it's a little verbose for my taste :)
more importantly, the runtime-efficiency is pretty bad (n-squared). calling Vector.contains performs (at worst) n comparisons; you're going to call it n times! Set.contains usually performs 2 comparisons (constant, much better), so I suggest you USE a Set to do the filtering, while still sticking with your good idea to use a List. When the ordering is "arbitrary" (so can't use TreeSet) but still relevant (so can't use HashSet), you're basically talking about a List.
I think saving A LOT of time is worth using A LITTLE extra space, so here, let's save ourself some runtime, and some carpal-tunnel.
import java.util.*;
class Foo {
     public static void main(String[] args) {
          String[] fruits = {"apple","orange","grape","apple","apple","banana"};
          List     l = Arrays.asList(fruits),
               m = filterDups(l);
          System.out.println(m);
     // remember, both of the following methods use O(n) space, but only O(n) time
     static List filterDups(List l) {
          List retVal = new ArrayList();
          Set s = new HashSet();
          for (Object o : l)
               if (s.add(o))
                    retVal.add(o);     // Set.add returns true iff the item was NOT already present
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     static void killDups(List l) {
          Set s = new HashSet();
          for (Iterator i = l.iterator(); i.hasNext(); )
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     // honestly, please don't use Vectors ever again... thanks!
     // if you're going to be a jerk about it, and claim you NEED a Vector result
     // then here's your code, whiner
     public static void mainx(String[] args) {
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          Vector v = new Vector(l);
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}

XMLBeans - how to delete an element?

Guys,
How do you delete an element within an xml data element?
If there's more than one way what are they?
Currently, I've generated XML java objects. I see a setNil() method and a couple removeXXX methods but neither appear to delete the element I'm trying to give the axe to.
Thanks!
-mark

makk_88 wrote:
since u want the simple method.....
just overrite the position of the element that need to be deleted with the next element in the array..
by doing this, element need to be deleted will not be accessibe..
i think u got..what i'm saying.
thnx..Mak,
Say we wish to delete the second element of an array a[1]. Do you really believe that a[1] = a[2] somehow magically deletes a[1]? I really don't think so Tim.
Two eggs, minus 1, equals two eggs? Interesting theory, but I think you're probably wrong.
*@OP:* My advise is just use an ArrayList.
Cheers. Keith.

How to insert 1 element in 2D array?

There is an example of how to replace element in 2D array, but I would like to insert (not replace), I use the insert element. it does not work for 2 D array.
Attachments:
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You need to tell more about what you want done. What exactly does it mean
to insert into a 2D array? Are you inserting into the row or column or
both? By that I mean to ask what parts of the array get their indices
incremented. Then what should happen at the endpoints? If you insert a
point into one row then that row will have one more element than the others.
Should the last element in that row be lost or should the other rows get a
zero appended?
"trout00" wrote in message
news:[email protected]..
> There is an example of how to replace element in 2D array, but I would
> like to insert (not replace), I use the insert element. it does not
> work for 2 D array.

How to delete an element in arraylist??

here i have an array list which contain details of an address book
I want to delete one element in the list
but its not deleting
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tank u in advance!!
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It's a good thing you use code tags for posting here. Could you now consider using code conventions?
- Why is the second loop nested in the first one? (this second loop looks weird anyway...)
- The Iterator has a remove method. You should use it in such case.
- Looks like you have a malpositioned/misused break statement (which is probably the reason why nothing happen, as it terminates the for loop after the first iteration.)

How to average each element in an array

I have data from a Gage Card that I would like to average. I am tuning a laser over a 50 mA range and for each 1mA increment in current, I am taking 100 scans. Each scan consisting of about 200 points. I cannot average more than 10 shots using the Gagecard so I would like to capture 100 scans, and average them to reduce noise. Currently, I have my capture vi inside of a for loop which repeats 100 times and each scan writes to a file, but I would like ony 1 scan (the lower noise averaged one) per current increment.
How can I average each element of 100 arrays and output this to an array?
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It sounds like you want to average element 0 across 100 arrays and make that element 0 of the new averaged array. Then average element 1 across 100 arrays and make that element 1 of the new array ... ?????
How are you working with your 100 1-D arrays now?
What you should do is make a 2-D array where one dimension is 100 (for the number of individual arrays) and the other dimension is how many elements are in those 100 1-D arrays. Then you can use for loops with auto indexing to break the 2-D array down into each row or column, do the average of that array, and autoindex on the other side to build back up into the new 1-D array of averages. You may need to to a transpose array going into your for loop in case the arrays are indexed in the wrong direction.
Message Edited by Ravens Fan on 01-21-2008 04:26 PM
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Example_BD.png ‏6 KB

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I want to find the number of elements in an array, and I can't find the tutorial that shows how to find it. If anyone could point me in the right direction, it would be greatly appreciated.

warnerja wrote:
flounder wrote:
DrLaszloJamf wrote:
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There are many ways to solve this problem, including creating new arrays as needed, and using System.arraycopy() to move things around. However, the best way is to use ArrayList, as discussed above.
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How to replace cluster element in an array?

hi,
I have understood preferable choice is to initialise array first and replace elements in an array instead of inserting new element in an array e.g. in a while loop.
So I started to this evaluate since I have an application where I want to read lots of measurements from a txt file and display them in a XY graph. XY graph must show Y value and corresponding X value either red if it is out of range and in green if it is in range. I found a solution to do it with an array of clusters.
In attached example I have two different methdologies represented. My problem is that upper solution doesn't display content of all measurements. Can somebody tell me what I'm doing wrong ?
regards,
petri
Solved!
Go to Solution.
Attachments:
plot test 3.vi ‏19 KB

Petri wrote:
... using cluster with three elements was a method I found to put red and green dots in one XY graph, eg. Y=coordinateY, X(green)=NaN,X(red)=coordinateX. Perhaps there is a better way to display the data, but I couldn't find it.
That is an odd thing and makes little sense. Why three? four, five, etc are NOT supported, so what if you want more than one color? (in range, fail high, fail low?). For more detail see the discussion here.
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Here's a quick draft. Of course you need to decide if the data is in columns or rows, etc. so modify as needed.
LabVIEW Champion . Do more with less code and in less time .
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I would like to now how to delete a photo. Plain and simple.

Why is it that delete does not mean delete?

The links below have instructions for deleting photos.
iOS and iPod: Syncing photos using iTunes
http://support.apple.com/kb/HT4236
iPad Tip: How to Delete Photos from Your iPad in the Photos App
http://ipadacademy.com/2011/08/ipad-tip-how-to-delete-photos-from-your-ipad-in-t he-photos-app
Another Way to Quickly Delete Photos from Your iPad (Mac Only)
http://ipadacademy.com/2011/09/another-way-to-quickly-delete-photos-from-your-ip ad-mac-only
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http://www.wondershare.com/apple-idevice/how-to-delete-photos-from-ipad.html
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http://www.lifeisaprayer.com/blog/2010/how-batch-delete-photos-ipad
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How to Delete Photos from iCloud’s Photo Stream
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When I have a list object (pop up list) I can define some values in the attribute palette of the object.
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Thanks jwh for this great solution! :)
On my german keyboard it is:
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Message was edited by:
ulfk

How to pick random element in 2D array

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Better make that 'Q' instead of "Q". The rest is fine though.
kind regards,
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how can i delete element in my tree?
after that to refresh the tree?

OK. You should have the rootNode and then your three other nodes added to the root (fiche, famille, etc)?
I'm currently creating an application that uses a tree with two branches. The code I posted works regardless of the branch the node I wish to remove belongs to.
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How to delete an element in an array...(simple way)

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