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• Compare a specific array element to a char with "if" in C?

  - by chutsu

  Rather Trivial Question. So I tried to do this: if(array[0]=="some_string") but obviously it doesn't work... What do I have to do?

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• how to put array of user control in the columns of Grid.

  - by jolly

  Hi I have array of Employee data which includes photo,description, title name,salary. I have to show each employee data in separate panel control structure that means if I have 10 employees there will be 10 panels. and I have to show these panels in a grid which has two columns. Also width of the panel in each column will vary according to main page size.

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• How can I group an array of rectangles into "Islands" of connected regions?

  - by Eric

  The problem I have an array of java.awt.Rectangles. For those who are not familiar with this class, the important piece of information is that they provide an .intersects(Rectangle b) function. I would like to write a function that takes this array of Rectangles, and breaks it up into groups of connected rectangles. Lets say for example, that these are my rectangles (constructor takes the arguments x, y, width,height): Rectangle[] rects = new Rectangle[] { new Rectangle(0, 0, 4, 2), //A new Rectangle(1, 1, 2, 4), //B new Rectangle(0, 4, 8, 2), //C new Rectangle(6, 0, 2, 2) //D } A quick drawing shows that A intersects B and B intersects C. D intersects nothing. A tediously drawn piece of ascii art does the job too: +-------+ +---+ ¦A+---+ ¦ ¦ D ¦ +-+---+-+ +---+ ¦ B ¦ +-+---+---------+ ¦ +---+ C ¦ +---------------+ Therefore, the output of my function should be: new Rectangle[][]{ new Rectangle[] {A,B,C}, new Rectangle[] {D} } The failed code This was my attempt at solving the problem: public List<Rectangle> getIntersections(ArrayList<Rectangle> list, Rectangle r) { List<Rectangle> intersections = new ArrayList<Rectangle>(); for(Rectangle rect : list) { if(r.intersects(rect)) { list.remove(rect); intersections.add(rect); intersections.addAll(getIntersections(list, rect)); } } return intersections; } public List<List<Rectangle>> mergeIntersectingRects(Rectangle... rectArray) { List<Rectangle> allRects = new ArrayList<Rectangle>(rectArray); List<List<Rectangle>> groups = new ArrayList<ArrayList<Rectangle>>(); for(Rectangle rect : allRects) { allRects.remove(rect); ArrayList<Rectangle> group = getIntersections(allRects, rect); group.add(rect); groups.add(group); } return groups; } Unfortunately, there seems to be an infinite recursion loop going on here. My uneducated guess would be that java does not like me doing this: for(Rectangle rect : allRects) { allRects.remove(rect); //... } Can anyone shed some light on the issue?

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• how to convert an array of characters in c to a string so as to do string operations on it?

  - by mekasperasky

  suppose there is a string of characters in an array of d[20] . How to convert to a string d so that i can use it in string functions like strcmp..

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• Saving any file to in the database, just convert it to a byte array?

  - by Blankman

  Is converting a file to a byte array the best way to save ANY file format to disk or database var binary column? So if someone wants to save a .gif or .doc/.docx or .pdf file, can I just convert it to a bytearray UFT8 and save it to the db as a stream of bytes?

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• Finding the maximum weight subsequence of an array of positive integers?

  - by BeeBand

  I'm tring to find the maximum weight subsequence of an array of positive integers - the catch is that no adjacent members are allowed in the final subsequence. The exact same question was asked here, and a recursive solution was given by MarkusQ. He provides an explanation, but can anyone help me understand how he has expanded the function? How does this solution take into consideration non-adjacent members?

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• Best way to find an item in a JavaScript Array ?

  - by zimbatm

  What is the best way to find if an object is in an array ? This is the best way I know: function include(arr, obj) { for(var i=0; i<arr.length; i++) { if (arr[i] == obj) return true; } } include([1,2,3,4], 3); // true include([1,2,3,4], 6); // undefined

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• When i am replacing or inserting an object into nsmutable array, I am getting Exception.

  - by Madan Mohan

  Hi, While replacing or inserting into an nsmutable array, I am getting exception as Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '* -[NSCFArray replaceObjectAtIndex:withObject:]: mutating method sent to immutable object' [list replaceObjectAtIndex:indexRow withObject:editcontacts]; //or [list insertObject:editcontacts atIndex:indexRow]; please help me. Madan, Thank You.

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• How to simulate array of events in C#? (like in VB6)

  - by blez

  I have an object with event handlers and I want to make something similar to VB6 to make array of that object. Something like: MyHandler(object sender, MyEventArgs e, int IndexOfObject) <-

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• convert table of input values into 2D array or struct?

  - by Henry

  What's the easiest way to convert a table of values (2D grid like Excel), into a 2D array or struct in ColdFusion? Thought of using dot in the name and eval them to become struct, but AFAIK name attribute of input field can only contains alpha numeric and underscore, and first char must be an alpha char.

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• [sublayer array] insertSublayer:above: atomic if superLayer stays the same?

  - by mahal tertin

  Setting: * two threads * one moves layers inside sublayer-array with insertSublayer:above: * the other accesses superlayer of the moved layer at the very same time Question: * is superlayer of the moved layer nil in any moment of insertSublayer:above: or below:?

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• Why does dynamic array always double by a factor of 2?

  - by Phoenix

  I was wondering how does one decide the resizing factor by which dynamic array resizes ? On wikipedia and else where I have always seen the number of elements being increased by a factor of 2? Why 2? Why not 3? how does one decide this factor ? IF it is language dependent I would like to know this for Java.

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• Is it correct to use Array.CopyTo to copy elements or should a for-loop always be used?

  - by Arc

  It's easier to write intArray1.CopyTo( intArray2, 0 ) than the for-loop equivalent, but System.Array does not provide any generic Copy/CopyTo methods. Is it better to write the for-loop? Or is using Copy/CopyTo compiled or JIT'd efficiently enough?

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• how can i export some values in mysql to an php array?

  - by sebastian

  hi, here is what i'm trying to make. i want to select all the users from a table. for all of these users i want to make a for cycle. from what i know for has three statements something like so for($i=0;$i++;$i=$max) how can i put the user id's in to an array so i can define my $max variable? or can this be done in an other method? thanks,

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• How do I represent integer array in Visual Studio 2010's UML class diagrams?

  - by AndrejaKo

  How do I represent integer array in Visual Studio 2010's UML class diagrams? I'm new to UML, so I could be missing something obvious here. Should I use Is ordered and Is unique?

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• Is there a work around for invalid octal digit in an array?

  - by sircrisp

  I'm trying to create an array which will hold the hours in a day so I can loop through it for a clock. I have: int hourArray[24] = {12, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11}; I am getting the error on the following numbers in order 08, 09, 08, 09. It tells me: Error: invalid octal digit I've never run into this before and I'm wondering if there is any way around it?

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• how to take user input in Array using java?

  - by sadia

  how to take user input in Array using Java? i.e we are not initializing it by ourself in our program but the user is going to give its value.. please guide!!

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• How can I pull a Google Doc spreadsheet into a PHP array?

  - by markdorison

  Is it possible for me to access a Google Docs spreadsheet (possibly as a CSV file?) and build that into a PHP array?

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• What is the fastest search which can be done on a non-sorted array?

  - by Jay

  How to search fast in a non-sorted array? I am unable to think of any other search mechanism apart from linear search. Any pointers will be helpful.

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• How many numbers in an array are smaller than a given number?

  - by Raihan

  The naive one is O(n). Is there a one that is O(log n) or even O(1)? How about a sorted array? How about using binary search tree?

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• How to convert a string of ints Eg 45 34 21 22 into int's and store them in an array ? in C programm

  - by Srinivasa Varadan

  Hi , I have a string val = "14 22 33 48"; int matrix[5]; I need to insert each of the values in the string into the respective location in the array Eg: matrix[0] = 14; matrix[1] = 22; matrix[2] = 33; matrix[3] = 48; How do I do this ?

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• PHP 5 functioning returning an array- interaction without assignment?

  - by Lee

  I'm wondering if this kind of thing will ever be possible in PHP (and whether it already is and I'm just missing something...) <?php function test() { return array( 'id'=>10, 'name'=>'John' ); } echo 'Your name is: '.test()['name']; ?> I'd really like to be able to use returned arrays directly instead of first assigning them to a var... possible?

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• Adding additional sorting attributes to array of records...then sorting!

  - by keruilin

  Let's say I run an ActiveRecord query and it returns 3 results, with a bunch of attributes. I want to add 3 attributes to each record in the Array so I can do sorting at a code-level. These 3 include: num_comments, num_views, last_view. How do I add these attributes? How do I then sort the records, in order of precendence, by num_comments AND by num_views AND by last_view?

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• How can I make `new[]` default-initialize the array of primitive types?

  - by sharptooth

  Every now and then I need to call new[] for built-in types (usually char). The result is an array with uninitialized values and I have to use memset() or std::fill() to initialize the elements. How do I make new[] default-initialize the elements?

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• How to get first and last occurence of an array of words in text using PHP?

  - by Runner

  $arr = array('superman','gossipgirl',...); $text = 'arbitary stuff here...'; What I want to do is find the first/last occurencing index of each word in $arr within $text,how to do it efficiently in PHP?

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