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• Converting Single dimensional vector or array to two dimension in Matlab

  - by pac

  Well I do not know if I used the exact term. I tried to find an answer on the net. Here is what i need: I have a vector a = 1 4 7 2 5 8 3 6 9 If I do a(4) the value is 4. So it is reading first column top to buttom then continuing to next .... I don't know why. However, What I need is to call it using two indices. As row and column: a(3,2)= 4 or even better if i can call it in the following way: a{3}(2)=4 What is this process really called (want to learn) and how to perform in matlab. I thought of a loop. Is there a built in function Thanks a lot Check this: a = 18 18 16 18 18 18 16 0 0 0 16 16 18 0 18 16 0 18 18 16 18 0 18 18 0 16 0 0 0 18 18 0 18 18 16 0 16 0 18 18 >> a(4) ans = 18 >> a(5) ans = 18 >> a(10) ans = 18 I tried reshape. it is reshaping not converting into 2 indeces

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• displaying values from join query array

  - by THOmas

  I have used a join query for retrieving value from two tables one is blogquestion and userdetails I wrote this query $this->questions = Doctrine_Query::create() ->select('b.question_id,b.user_id,b.question_title,b.question_tags,b.created_at,u.id,u.name') ->from('BlogQuestion b') ->leftJoin('b.UserDetails u') ->execute(); In the template iam displaying the result using a foreach <?php foreach($questions as $quest):?> echo $quest->getQuestionTitle() echo $quest->getQuestionTags() echo $quest->getName() <?php endforeach?> title is getting from the blogquestion table and name is in usredetails table iam getting the eerror Unknown record property / related component "name" on "BlogQuestion"

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• Haskell - how to write array to file?

  - by MMM

  I am trying: saveArr = do outh <- openFile "test.txt" WriteMode hPutStrLn outh [1,2,3] hClose outh but it doesn't works... output: No instance for (Num Char) arising from the literal `1'

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• C pointer array scope and function calls

  - by juvenis

  I have this situation: { float foo[10]; for (int i = 0; i < 10; i++) { foo[i] = 1.0f; } object.function1(foo); // stores the float pointer to a const void* member of object } object.function2(); // uses the stored void pointer Are the contents of the float pointer unknown in the second function call? It seems that I get weird results when I run my program. But if I declare the float foo[10] to be const and initialize it in the declaration, I get correct results. Why is this happening?

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• Java Array Index Out of Bounds Exception

  - by user1302023

  I need help debugging the following program: I'm getting a run time error that reads: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at SearchEngine.main(SearchEngine.java:126) import java.util.*; import java.io.*; public class SearchEngine { public static int getNumberOfWords (File f) throws FileNotFoundException { int numWords = 0; Scanner scan = new Scanner(f); while (scan.hasNext()) { numWords++; scan.next(); } scan.close(); return numWords; } public static void readInWords (File input, String [] x) throws FileNotFoundException { Scanner scan = new Scanner(input); int i = 0; while (scan.hasNext() && i<x.length) { x[i] = scan.next(); i++; } scan.close(); } public static int getNumOfDistinctWords (File input, String [] x) throws FileNotFoundException { Scanner scan = new Scanner(input); int count = 0; int i = 1; while (scan.hasNext() && i<x.length) { if (!x[i].equals(x[i-1])) { count++; } i++; } scan.close(); return count; } public static void readInDistinctWords (String [] x, String [] y) { int i = 1; int k = 0; while (i<x.length) { if (!x[i].equals(x[i-1])) { y[k] = x[i]; k++; } i++; } } public static int getNumberOfLines (File input) throws FileNotFoundException { int numLines = 0; Scanner scan = new Scanner(input); while (scan.hasNextLine()) { numLines++; scan.nextLine(); } scan.close(); return numLines; } public static void readInLines (File input, String [] x) throws FileNotFoundException { Scanner scan = new Scanner(input); int i = 0; while (scan.hasNextLine() && i<x.length) { x[i] = scan.nextLine(); i++; } scan.close(); } public static void main(String [] args) { try { //gets file name System.out.println("Enter the name of the text file you wish to search"); Scanner kb = new Scanner(System.in); String fileName = kb.nextLine(); String TXT = ".txt"; if (!fileName.endsWith(TXT)) { fileName = fileName.concat(TXT); } File input = new File(fileName); //First part of creating index System.out.println("Creating vocabArray"); int NUM_WORDS = getNumberOfWords(input); //System.out.println(NUM_WORDS); String [] wordArray = new String[NUM_WORDS]; readInWords(input, wordArray); Arrays.sort(wordArray); int NUM_DISTINCT_WORDS = getNumOfDistinctWords(input, wordArray); String [] vocabArray = new String[NUM_DISTINCT_WORDS]; readInDistinctWords(wordArray, vocabArray); System.out.println("Finished creating vocabArray"); System.out.println("Creating concordanceArray"); int NUM_LINES = getNumberOfLines(input); String [] concordanceArray = new String[NUM_LINES]; readInLines(input, concordanceArray); System.out.println("Finished creating concordanceArray"); System.out.println("Creating invertedIndex"); int [][] invertedIndex = new int[NUM_DISTINCT_WORDS][10]; int [] wordCountArray = new int[NUM_DISTINCT_WORDS]; int lineNum = 0; while (lineNum<concordanceArray.length) { Scanner scan = new Scanner(concordanceArray[lineNum]); while (scan.hasNext()) { int wordPos = Arrays.binarySearch(vocabArray, scan.next()); wordCountArray[wordPos]+=1; for(int i = 0; i < invertedIndex.length; i++) { for(int j = 0; j < invertedIndex[i].length; j++) { if (invertedIndex[i][j] == 0) { invertedIndex[i][j] = lineNum; break; } } } } lineNum++; } System.out.println("Finished creating invertedIndex"); } catch (FileNotFoundException exception) { System.out.println("File Not Found"); } } //main } //class

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• Array performance question

  - by Konrad

  I am very familiar with STL vector (and other container) performance guarantees, however I can't seem to find anything concrete about plain arrays. Are pointer arithmetic and [] methods constant or linear time?

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• JS text to array

  - by Sonny

  Hi i got this text 2/92/20 3/32/32 4/62/6 5/22/28 6/60/61 7/33/32 8/34/31 9/31/19 10/19/19 11/34/39 12/32/32 14/19/25 15/45/37 16/32/32 17/84/36 18/72/33 and i need it to be like // 2/92/20 chars[0][0]=2; chars[0][1]=92; chars[0][2]=20; How should i make that PS: the split must be in $.ajax({ type: "POST", url: "char_info2.php", dataType: "html", success: function(data) { //here }

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• Ruby CSV in Array

  - by mattrock

  I read a CSV file. This file looks like this 1.00 cm; 2.00cm ; 3.00 cm; ... ; 100 cm 2.00 cm; 4.00 cm; 6.00 cm; ... ; 100 cm 4.00 cm; 8.00 cm; 12.00 cm; ... ; 100cm 8.00 cm; 16.00 cm; 24.00 cm; ... ; 100cm I have already written the following code CSV.foreach("/Users/testUser/Entwicklung/coverrechner/CoverPaperDE.csv", col_sep: ';') do |row| puts row[0] end This produces the following output: 1.00 cm 2.00 cm 4.00 cm 8.00 cm Example: My matrix is constructed 1.1 1.2 1.3 1.4 2.1 2.2 2.3 2.4 3.1 3.2 3.3 3.4 4.1 4.2 4.3 4.4 I want the following output 1.1 2.1 3.1 4.1 1.2 2.2 3.2 4.2 ... 4.4 How does it work?

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• I need to modify a program to use arrays and a method call. Should I modify the running file, the data collection file, or both?

  - by g3n3rallyl0st

  I have to have multiple classes for this program. The problem is, I don't fully understand arrays and how they work, so I'm a little lost. I will post my program I have written thus far so you can see what I'm working with, but I don't expect anyone to DO my assignment for me. I just need to know where to start and I'll try to go from there. I think I need to use a double array since I will be working with decimals since it deals with money, and my method call needs to calculate total price for all items entered by the user. Please help: RUNNING FILE package inventory2; import java.util.Scanner; public class RunApp { public static void main(String[] args) { Scanner input = new Scanner( System.in ); DataCollection theProduct = new DataCollection(); String Name = ""; double pNumber = 0.0; double Units = 0.0; double Price = 0.0; while(true) { System.out.print("Enter Product Name: "); Name = input.next(); theProduct.setName(Name); if (Name.equalsIgnoreCase("stop")) { return; } System.out.print("Enter Product Number: "); pNumber = input.nextDouble(); theProduct.setpNumber(pNumber); System.out.print("Enter How Many Units in Stock: "); Units = input.nextDouble(); theProduct.setUnits(Units); System.out.print("Enter Price Per Unit: "); Price = input.nextDouble(); theProduct.setPrice(Price); System.out.print("\n Product Name: " + theProduct.getName()); System.out.print("\n Product Number: " + theProduct.getpNumber()); System.out.print("\n Amount of Units in Stock: " + theProduct.getUnits()); System.out.print("\n Price per Unit: " + theProduct.getPrice() + "\n\n"); System.out.printf("\n Total cost for %s in stock: $%.2f\n\n\n", theProduct.getName(), theProduct.calculatePrice()); } } } DATA COLLECTION FILE package inventory2; public class DataCollection { String productName; double productNumber, unitsInStock, unitPrice, totalPrice; public DataCollection() { productName = ""; productNumber = 0.0; unitsInStock = 0.0; unitPrice = 0.0; } //setter methods public void setName(String name) { productName = name; } public void setpNumber(double pNumber) { productNumber = pNumber; } public void setUnits(double units) { unitsInStock = units; } public void setPrice(double price) { unitPrice = price; } //getter methods public String getName() { return productName; } public double getpNumber() { return productNumber; } public double getUnits() { return unitsInStock; } public double getPrice() { return unitPrice; } public double calculatePrice() { return (unitsInStock * unitPrice); } }

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• how to clear an array

  - by LIX

  Dears, I have a global variable int [ ] I want to clear its data and fill it again in a loop what should I do in C#? thank you

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• Counting array in API JSON Response

  - by bryan

  I'm trying to do a simple count of how many refunds are in my Stripe Response but count() isn't working and I don't really know any other way of achieving this. Could anyone point me in the right direction? $retrieve_event = Stripe_Event::retrieve("evt_00000000000000"); $event_json_id = json_decode($retrieve_event); $refund_array = $event_json_id->{'data'}->{'object'}->{'refunds'}; die(count($refund_array)); This is the response of $retrieve_event { "created": 1326853478, "livemode": false, "id": "evt_00000000000000", "type": "charge.refunded", "object": "event", "request": null, "data": { "object": { "id": "ch_00000000000000", "object": "charge", "created": 1402433517, "livemode": false, "paid": true, "amount": 1000, "currency": "usd", "refunded": true, "card": { "id": "card_00000000000000", "object": "card", "last4": "0028", "type": "Visa", "exp_month": 8, "exp_year": 2015, "fingerprint": "a5KWlTcrmCYk5DIYa", "country": "US", "name": "First Last", "address_line1": "null", "address_line2": null, "address_city": "null", "address_state": "null", "address_zip": "null", "address_country": "US", "cvc_check": null, "address_line1_check": "fail", "address_zip_check": "pass", "customer": "cus_00000000000000" }, "captured": true, "refunds": [ { "id": "re_104CKt4uGeYuVLAahMwLA2TK", "amount": 100, "currency": "usd", "created": 1402433533, "object": "refund", "charge": "ch_104CKt4uGeYuVLAazSyPqqLV", "balance_transaction": "txn_104CKt4uGeYuVLAaSNZCR867", "metadata": {} }, { "id": "re_104CKt4uGeYuVLAaDIMHoIos", "amount": 200, "currency": "usd", "created": 1402433539, "object": "refund", "charge": "ch_104CKt4uGeYuVLAazSyPqqLV", "balance_transaction": "txn_104CKt4uGeYuVLAaqSwkNKPO", "metadata": {} }, { "id": "re_4CL6n1r91dY5ME", "amount": 700, "currency": "usd", "created": 1402434306, "object": "refund", "charge": "ch_4CL6FNWhGzVuAV", "balance_transaction": "txn_4CL6qa4vwlVaDJ" } ], "balance_transaction": "txn_00000000000000", "failure_message": null, "failure_code": null, "amount_refunded": 1000, "customer": "cus_00000000000000", "invoice": null, "description": "this is a description", "dispute": null, "metadata": {}, "statement_description": "this is a description", "fee": 0 } } }

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• Store interface in array list java

  - by agazerboy

  Hi all, I am learning java. I am trying to use composite design pattern. I am trying to use following logic. ( Don't laugh I know it is very basic :) ) Item -> interface Folder -> class File -> class In folder class, can I create an arraylist of Item to store files information? ArrayList<Item> info = ArrayList<Item>(); Or should I use Folder Arraylist? ArrayList<Folder> info = ArrayList<Folder>(); I don't know if interface can store real data as there is no variable just function definitions. Thanks for helping a newbie :)

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• Serialize checkbox array, also get checkboxes with off-value

  - by guzh

  Hi, I was wondering if this is possible. The serialize-string will be inserted in a mySQL-database, so it would be fine if all checkboxes would be inserted and not only the ones that is ticked(on). it's possible to make on column in the database for each of the checkboxes, and use this if/else-statement: if(isset($_GET['checkbox'])) { // It's checked! } else { // not checked! } but its a bit unappropriate...

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• how to fetch & store any column from coredata to array

  - by user440485

  Hi All, I am working on page(Lesson) has button called "AddToFavorite". when i click on this button lessonID,lessonHeading is added in the Coredata. - (NSFetchedResultsController *)fetchedResultsController { // Set up the fetched results controller if needed. if (fetchedResultsController != nil) { return fetchedResultsController; } // Create the fetch request for the entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; // Edit the entity name as appropriate. NSEntityDescription *entity = [NSEntityDescription entityForName:@"Favorites" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; // Edit the sort key as appropriate. NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"lessonHeading" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:@"lessonHeading" cacheName:@"Root"]; self.fetchedResultsController = aFetchedResultsController; self.fetchedResultsController.delegate = self; [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; return fetchedResultsController; } -(void)addToFavorites { UIAlertView *alert=[[UIAlertView alloc]initWithTitle:nil message:@"Lesson has been added successfully to your Favorite List" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; //Create a new managed object context for the new book -- set its persistent store coordinator to the same as that from the fetched results controller's context. NSManagedObjectContext *addingContext = [[NSManagedObjectContext alloc] init]; self.addingManagedObjectContext = addingContext; [addingManagedObjectContext setPersistentStoreCoordinator:[[fetchedResultsController managedObjectContext] persistentStoreCoordinator]]; Favorites *fav = [NSEntityDescription insertNewObjectForEntityForName:@"Favorites" inManagedObjectContext:addingContext]; fav.lessonID=[[data objectAtIndex:count]objectForKey:@"LessonID"]; fav.lessonTitle=[[data objectAtIndex:count]objectForKey:@"LessonTitle"]; [self didFinishWithSave:YES]; [addingContext release]; } My problem is that i want to show an alert if this lessonID is already existing in the coreData. show guide me how i can match the current page lessonID with the existing lessonID's in the CoreData. I am using CoreData 1st time.so sory for any mistake ...& thanks for ypur help frnds.

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• Java webservice does not return all struct array

  - by Aykut

  Hi I wrote a webservice which runs correctly. In the webservice, there is a class which contains other classes' arrays and the webservice returns this class's instance. for example public class cls1 implements Serializable{ cls2[] cls2Arr; cls3[] cls3Arr; } I fill this arrays (cls2Arr and cls3Arr) correctly in service side. When I read this arrays from client, I see only last item of arrays. I checked on the service side before the webservice returns, and the cls1 instance and everything else looked good. What can be a reason ? Thx

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• Blob byte array in XML to Image

  - by Rayvr

  Hi, I am getting a XML File to generate a preview, in a format like this: <PARAM> <LABEL>Preview 16x16</LABEL> <ID>{03F5C6D3-ABCD-4889-B3AA-C3524C62FA1C}</ID> <LAYER>-1</LAYER> <VALUE> <BLOB> /9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8LCwkMEQ8S EhEPERETFhwXExQaFRERGCEYGh0dHx8fExciJCIeJBweHx7/2wBDAQUFBQcGBw4ICA4eFBEU Hh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh7/wAAR CAAOABADASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAA AgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkK FhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWG h4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl 5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREA AgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYk NOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOE hYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk 5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwDP+IXxH+Ilr4/1DRrLxZqUrjUTbMLKdtsz eZgLCgHyDHy4GSeee9dT4Z8G/FjxHrmla3Y3bRlRtl1iW9ztGTnlXLS47YG0nrXQa78Bda07 U7jXNM1nS9yGVhJLHJvk8wkEkchWAYjcuDzxggGuB8K6v49i8X28Wg+IodMkaUQFI4sQSEt1 eM5B42qOPlVVVcAV5M8NKdSMW/cV3vrfXyb/AB/I+4+sVUnPCUVeyV3Z3010923krdPU/9k= </BLOB> </VALUE> </PARAM> I need to convert the <BLOB> section into an Image. I access the Element Value like this: string clean = valueC.ElementAt(0).Value.Replace("\t", string.Empty).Replace("\n", string.Empty); I've tried to read it into a MemoryStream and convert to Image: MemoryStream ms = new MemoryStream(blob, 0, blob.Length); ms.Write(blob, 0, blob.Length); Image i = Image.FromStream(ms); In this way I get "Parameter not valid exception" at getting the Image. I've also tried to save it directly into a File: using (FileStream fs = new FileStream(label + ".jpg", FileMode.Create)) { fs.Write(blob, 0, blob.Length); } But when I try to open the generated file, displays a message about damage in it. I know that encoding is important, I've already tried ASCII, UTF-8, UTF-7 and this: BinaryFormatter bf = new BinaryFormatter(); MemoryStream ms = new MemoryStream(); bf.Serialize(ms, clean); ms.Seek(0, 0); byte[] blob = ms.ToArray(); I dont know what else to do. I'll appreciate if somebody can help me. Thanks

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• Android onClickListener options and help on creating a non-static array adapter

  - by CoderInTraining

  I am trying to make an application that gets data dynamically and displays it in a listView. Here is my code that I have with static data. There are a couple of things I want to try and do and can't figure out how. MainActivity.java package text.example.project; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import android.app.ListActivity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends ListActivity { //declarations private boolean isItem; private ArrayAdapter<String> item1Adapter; private ArrayAdapter<String> item2Adapter; private ArrayAdapter<String> item3Adapter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Collections.sort(ITEM1); Collections.sort(ITEM2); Collections.sort(ITEM3); item1Adapter = new ArrayAdapter<String>(this, R.layout.list_item, ITEM1); item2Adapter = new ArrayAdapter<String>(this, R.layout.list_item, ITEM2); item3Adapter = new ArrayAdapter<String>(this, R.layout.list_item, ITEM3); setListAdapter(item1Adapter); isItem = true; ListView lv = getListView(); lv.setTextFilterEnabled(true); lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // When clicked, show a toast with the TextView text if (isItem) { //ITEM1.add("another\n\t" + Calendar.getInstance().getTime()); Collections.sort(ITEM1); item2Adapter.notifyDataSetChanged(); setListAdapter(item2Adapter); isItem = false; } else { item1Adapter.notifyDataSetChanged(); setListAdapter(item1Adapter); isItem = true; } Toast.makeText(getApplicationContext(), ((TextView) view).getText(), Toast.LENGTH_SHORT).show(); } }); } // need to turn dynamic static ArrayList<String> ITEM1 = new ArrayList<String> (Arrays.asList( "ITEM1-1", "ITEM1-2" )); static ArrayList<String> ITEM2 = new ArrayList<String> (Arrays.asList( "ITEM2-1", "ITEM2-2" )); static ArrayList<String> ITEM3 = new ArrayList<String> (Arrays.asList("ITEM3-1", "ITEM3-2")); } list_item.xml <?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dp" android:textSize="16sp" > </TextView> What I want to do is first pull from a dynamic source. I need to do what is almost exactly like this tutorial... http://androiddevelopement.blogspot.in/2011/06/android-xml-parsing-tutorial-using.html ... however, I can't get the tutorial to work... I also would like to know how I can make the list item clicks so that if I click on "ITEM1-1" it goes to the menu "ITEM2-1" and "ITEM2-2". and if "ITEM1-2" is clicked, then it goes to the menu with "ITEM3-1" and "ITEM3-2"... I am totally a noob at this whole android development thing. So any suggestions would be great!

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• why arrayfun does NOT improve my struct array operation performance

  - by HaveF

  here is the input data: % @param Landmarks: % Landmarks should be 1*m struct. % m is the number of training set. % Landmark(i).data is a n*2 matrix old function: function Landmarks=CenterOfGravity(Landmarks) % align center of gravity for i=1 : length(Landmarks) Landmarks(i).data=Landmarks(i).data - ones(size(Landmarks(i).data,1),1)... *mean(Landmarks(i).data); end end new function which use arrayfun: function [Landmarks] = center_to_gravity(Landmarks) Landmarks = arrayfun(@(struct_data)... struct('data', struct_data.data - repmat(mean(struct_data.data), [size(struct_data.data, 1), 1]))... ,Landmarks); end %function center_to_gravity when using profiler, I find the usage of time is NOT what I expected: Function Total Time Self Time* CenterOfGravity 0.011s 0.004 s center_to_gravity 0.029s 0.001 s Can someone tell me why? BTW...I can't add "arrayfun" as a new tag for my reputation.

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• Array of NSButton

  - by mralvin

  I wonder if I can do something like IBOutlet NSButton * aButton[100]; It turns out that aButton cannot be seen in the interface builder. My app has lots of buttons and I want to see if there are way I can use looping to iterate the state of all buttons.

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• All possible combinations of length 8 in a 2d array

  - by CodeJunki

  Hi, I've been trying to solve a problem in combinations. I have a matrix 6X6 i'm trying to find all combinations of length 8 in the matrix. I have to move from neighbor to neighbor form each row,column position and i wrote a recursive program which generates the combination but the problem is it generates a lot of duplicates as well and hence is inefficient. I would like to know how could i eliminate calculating duplicates and save time. int a={{1,2,3,4,5,6}, {8,9,1,2,3,4}, {5,6,7,8,9,1}, {2,3,4,5,6,7}, {8,9,1,2,3,4}, {5,6,7,8,9,1}, } void genSeq(int row,int col,int length,int combi) { if(length==8) { printf("%d\n",combi); return; } combi = (combi * 10) + a[row][col]; if((row-1)>=0) genSeq(row-1,col,length+1,combi); if((col-1)>=0) genSeq(row,col-1,length+1,combi); if((row+1)<6) genSeq(row+1,col,length+1,combi); if((col+1)<6) genSeq(row,col+1,length+1,combi); if((row+1)<6&&(col+1)<6) genSeq(row+1,col+1,length+1,combi); if((row-1)>=0&&(col+1)<6) genSeq(row-1,col+1,length+1,combi); if((row+1)<6&&(row-1)>=0) genSeq(row+1,col-1,length+1,combi); if((row-1)>=0&&(col-1)>=0) genSeq(row-1,col-1,length+1,combi); } I was also thinking of writing a dynamic program basically recursion with memorization. Is it a better choice?? if yes than I'm not clear how to implement it in recursion. Have i really hit a dead end with approach??? Thankyou Edit Eg result 12121212,12121218,12121219,12121211,12121213. the restrictions are that you have to move to your neighbor from any point, you have to start for each position in the matrix i.e each row,col. you can move one step at a time, i.e right, left, up, down and the both diagonal positions. Check the if conditions. i.e if your in (0,0) you can move to either (1,0) or (1,1) or (0,1) i.e three neighbors. if your in (2,2) you can move to eight neighbors. so on...

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• How to copy a text array to a series of cells in Excel

  - by aSystemOverload

  I am dynamically creating a report, where I create a worksheet, bring in the records afresh. How can I easily type the field names and copy them to the cells. Without doing one cell per line, there are ~20 columns. I tried: dim fieldNames as variant fieldNames = ("'DS Date', 'A', 'B', 'A','S ASD', 'S','D S','D S', 'S','D S', 'SD', 'S','D'") Sheets("DATA").Range("C14:W14").Value = Application.WorksheetFunction.Transpose(fieldNames) But it just posts the whole thing in each cell? Any ideas?

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• calculating the index of an array C#

  - by Kerry G

  I want to display a list of the answers a student entered incorrectly. How do I identify the index of these questions? I am hoping to change the contents of a textbox to a list of the questions answered incorrectly, which would require calculating the index of each incorrect question. using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApplication5 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //return a pass/fail //return number of correct answers //return number of incorrect answers //return index figures of incorrect values public void examResults () { string[] correctAnswers = {B,D,A,A,C,A,B,A,C,D,B,C,D,A,D,C,C,B,D,A}; string[] studentResults = File.ReadAllLines("studentResults.txt"); var c = correctAnswers.Where((x, i) => x.Equals(studentResults[i])).Count(); if ( c <= 14) passFailBox.Text = "Student has failed the exam"; else passFailBox.Text = "Student has passed the exam"; numberCorrectBox.Text = "Student has answered" + c + "answers correctly"; int f; f= 21-c; numberIncorrectBox.Text = "Student has answered" + f + "answers incorrectly"; } } }

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• Formatting a byte array to string in java

  - by rgksugan

  I am using this code to find the MAC address of a machine.This code prints directly the MAC address, but i want to return it as a string.I am completely confused. please help. try { InetAddress add = InetAddress.getByName("10.123.96.102"); NetworkInterface ni1 = NetworkInterface.getByInetAddress(add); if (ni1 != null) { byte[] mac1 = ni1.getHardwareAddress(); if (mac1 != null) { for (int k = 0; k < mac1.length; k++) { System.out.format("%02X%s", mac1[k], (k < mac1.length - 1) ? "-" : ""); } } else { System.out.println("Address doesn't exist "); } System.out.println(); } else { System.out.println("address is not found."); } } catch (UnknownHostException e) { e.printStackTrace(); } catch (SocketException e) { e.printStackTrace(); }

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• How do I initialize a fixed byte array?

  - by Jurily

  I have the following struct: [StructLayout(LayoutKind.Sequential, Pack = 1)] struct cAuthLogonChallenge { byte cmd; byte error; fixed byte name[4]; public cAuthLogonChallenge() { cmd = 0x04; error = 0x00; name = ??? } } name is supposed to be a null-terminated ASCII string, and Visual Studio is rejecting all my ideas to interact with it. How do I set it?

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• Array Conversion in Xstream Parser

  - by Avidev9

  Hi am trying to convert the following xml into object using Xstream parser. I tried using the below code to convert the xml but am getting Duplicate field ERRORS ---- Debugging information ---- field : ERRORS class : com.avidev9.Fees.GCSFeesResponse$DebitsWSDS required-type : com.avidev9.Fees.GCSFeesResponse$DebitsWSDS converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter path : /DebitsWSDS/ERRORS[2] line number : 1 version : null The Code I used xstream.alias("DebitsWSDS", GCSFeesResponse.DebitsWSDS.class); xstream.alias("ERRORS", GCSFeesResponse.ERRORS.class); xstream.alias("ERROR_ID", String.class); xstream.alias("TABLE_NAME", String.class); xstream.alias("TABLE_ID", String.class); xstream.alias("ROW_ID", String.class); xstream.alias("ERROR_TEXT", String.class); xstream.alias("ERROR_CODE", String.class); xstream.alias("COLUMN_ID", String.class); xstream.alias("ERROR_TYPE", String.class); GCSFeesResponse.DebitsWSDS gcsFeesResponse =(GCSFeesResponse.DebitsWSDS)xstream.fromXML(result.get_any()[0].getAsString()); XML <DebitsWSDS xmlns=""> <DEBITS> <DEBIT_ID>-1</DEBIT_ID> <ACCOUNT_ID>12321312313</ACCOUNT_ID> <EFFECTIVE_DATE>2012-12-12T00:00:00-06:00</EFFECTIVE_DATE> <DAY_OF_MONTH>12</DAY_OF_MONTH> <DEBIT_TYPE>S</DEBIT_TYPE> <OCCURS_NUM>1</OCCURS_NUM> <DEBIT_AMOUNT>750</DEBIT_AMOUNT> <MEMO>S</MEMO> <ACTIVE_FLAG>Y</ACTIVE_FLAG> <MODIFIED_BY/> <DEBIT_AUTHORIZED/> <DEBIT_AUTHORIZED_BY/> <REMAINING_OCCURRENCES>0</REMAINING_OCCURRENCES> </DEBITS> <ERRORS> <ERROR_ID>1</ERROR_ID> <TABLE_NAME>Debits</TABLE_NAME> <TABLE_ID>-1</TABLE_ID> <ROW_ID>0</ROW_ID> <COLUMN_ID>EXCEPTION</COLUMN_ID> <ERROR_TYPE>E</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>This debit type is not allowed for this company and policy group</ERROR_TEXT> </ERRORS> <ERRORS> <ERROR_ID>2</ERROR_ID> <TABLE_NAME>Clients</TABLE_NAME> <TABLE_ID/> <ROW_ID>0</ROW_ID> <COLUMN_ID>CLOSE_SCHED_DATE</COLUMN_ID> <ERROR_TYPE>E</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>Client has been closed. Cannot Authorize Draft.</ERROR_TEXT> </ERRORS> <ERRORS> <ERROR_ID>3</ERROR_ID> <TABLE_NAME>Debits</TABLE_NAME> <TABLE_ID>-1</TABLE_ID> <ROW_ID>0</ROW_ID> <COLUMN_ID>EXCEPTION</COLUMN_ID> <ERROR_TYPE>E</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>Cannot Schedule a Debit or Draft. Client has been closed.</ERROR_TEXT> </ERRORS> <ERRORS> <ERROR_ID>1</ERROR_ID> <TABLE_NAME>Debits</TABLE_NAME> <TABLE_ID>-1</TABLE_ID> <ROW_ID>0</ROW_ID> <COLUMN_ID>ACTIVE_FLAG</COLUMN_ID> <ERROR_TYPE>W</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>Creating debit on inactive Client account.</ERROR_TEXT> </ERRORS> </DebitsWSDS> My class structure. package com.avidev9.Fees; import java.util.List; public class GCSFeesResponse { public DebitsWSDS DebitsWSDS; public class DebitsWSDS { public List<ERRORS> ERRORS; public String xmlns; public DEBITS DEBITS; } public class ERRORS { public String TABLE_NAME; public Integer TABLE_ID; public Integer ERROR_ID; public Integer ROW_ID; public String ERROR_TEXT; public Integer ERROR_CODE; public String COLUMN_ID; public String ERROR_TYPE; } public class DEBITS { public String EFFECTIVE_DATE; public String ACTIVE_FLAG; public Long ACCOUNT_ID; public String DEBIT_AUTHORIZED_BY; public Integer DAY_OF_MONTH; public Integer DEBIT_ID; public String MEMO; public Integer REMAINING_OCCURRENCES; public String DEBIT_TYPE; public Integer OCCURS_NUM; public Integer DEBIT_AMOUNT; public String DEBIT_AUTHORIZED; public String MODIFIED_BY; } }

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