arrays

Why do UInt16 arrays seem to add faster than int arrays?

It seems that C# is faster at adding two arrays of UInt16[] than it is at adding two arrays of int[]. This makes no sense to me, since I would have assumed the arrays would be word-aligned, and thus int[] would require less work from the CPU, no? I ran the test-code below, and got the following results: Int for 1000 took 9896625613 ...

How to get an Array from jQuery, multiple <input>s with the same ID

I have a form where users can add input fields with jQuery. <input type="text" id="task" name="task[]" /> After submitting the form I get an array in PHP. I want to handle this with the $.ajax() but I have no idea how to turn my <input>s to an array in jQuery. Thanks in advance. ...

Java HashMap with Int Array

Hello I am using this code to check that array is present in the HashMap. public class Test { public static void main(String[]arg) { HashMap<int[],String> map= new HashMap<int[],String>(); map.put(new int[]{1,2}, "sun"); System.out.println(map.containsKey((new int[]{1,2}))); } } But this prints False. How c...

Scala: how can I sort an array of tuples by their second element?

Hi all, is there a way in Scala to sort an array of tuples using and arbitrary comparison function? In particular I need to sort and array of tuples by their second element, but I wanted to know a general technique to sort arrays of tuples. Thanks! ...

Print and array to a file..

Hi, I would like to print an array to a file. I would like the file to look exactly similar like how a code like this looks. print_r ($abc); assuming $abc is an array. Is there any one lines solution for this rather than regular for each look. P.S - I currently use serialie but i want to make the files readable as readability is qui...

How to manipulate *huge* amounts of data

Hi there! I'm having the following problem. I need to store huge amounts of information (~32 GB) and be able to manipulate it as fast as possible. I'm wondering what's the best way to do it (combinations of programming language + OS + whatever you think its important). The structure of the information I'm using is a 4D array (NxNxNxN) ...

Python - multi-line array

Hi guys, in c++ I can wrote: int someArray[8][8]; for (int i=0; i < 7; i++) for (int j=0; j < 7; j++) someArray[i][j] = 0; And how can I initialize multi-line arrays in python? I tried: array = [[],[]] for i in xrange(8): for j in xrange(8): array[i][j] = 0 ...

Compare to values of two arrays in PHP

Hi i want to compare all the values of 2 arrays and end up with a true or false . I am using the code below and would of thought that the result would be false . but that is not the case , when the last line runs I would expect a display something like Array ( [0] => 0 ) but I get no display so assume that php is happy that there is no...

Using recursion to find paths in a 2D array

Hi, I'm working on a project for my A level. It involves finding the maximum flow of a network, and I'm using javascript. I have a 2D array, with values in the array representing a distance between the two points. An example of the array: 0 2 2 0 0 0 1 2 0 0 0 2 0 0 0 0 I think I need to use a recursive technique to find a path; belo...

Recursing data into a 2 dimensional array in PHP 5

I'm getting bamboozled by "for each" loops and two dimensional arrays, and I'm a php newb so please bear with me (and ignore any variables with the word "image" - it's all about the mp3s, I just didn't change it from the xml tutorial) I found a php function on the net that list files in a directory, the output of which is: Array ( [0...

I made a horrible loop.... help fix my logic please

I know I'm doing this a bad way... but I'm having trouble seeing any alternatives. I have an array of products that I need to select 4 of randomly. $rawUpsellList is an array of all of the possible upsells based off of the items in their cart. Each value is a product object. I know this is horribly ugly code but I don't see an altern...

How to iterate over inputs of certain class with Prototype

Hi, I want to iterate over an array of inputs that belong to certain class (eg."required"). How can I traverse it and get their values ? Something like $$('input required').invoke(function(e){ alert(?input value?) }); thanks ...

Java: matching two different type of array

Hi, I am doing a password login that requires me to match two array: User and Pass. If user key in "mark" and "pass", it should show successfully. However I have trouble with the String[] input = pass.getPassword(); and the matching of the two arrays. String[] User = {"mark", "susan", "bobo"}; String[] Pass = {"pass", "word", "pas...

Fastest PHP Routine To Match Words

What is the fastest way in PHP to take a keyword list and match it to a search result (like an array of titles) for all words? For instance, if my keyword phrase is "great leather shoes", then the following titles would be a match... Get Some Really Great Leather Shoes Leather Shoes Are Great Great Day! Those Are Some Cool Leather Sho...

where to use array() in PHP

can you give me examples of using array() function ? ...

C/C++ efficient bit array

hi. Can you recommend efficient/clean way to manipulate arbitrary length bit array? right now I am using regular int/char bitmask, but those are not very clean when array length is greater than datatype length. std vector<bool> is not available for me. thanks ...

Coding an array in a class library and make a call to it C#

I'm new to C#, so this may be a basic question. What I need to do is put an array such as the one below in a class library and then make a call to it. So I'd want the appropriate picture to appear via the class and this array. I know there's a much simpler way to make certain pictures appear, but this is a requirement for the project. It...

array with sessions, only prints one letter

On login: $result = mysql_query("SELECT `id`, `username`, `email` FROM `users` WHERE `username` = '$username' AND `password` = '$passwd'"); $userdata = array('id','username','email'); $_SESSION['user'] = mysql_result($result, 0, $userdata); And when I want to print the users username: echo $_SESSION['user']...

Is it possible to reinterpret pointer as dimensioned array reference?

hi. Suppose I have some pointer, which I want to reinterpret as static dimension array reference: double *p; double (&r)[4] = ?(p); // some construct? // clarify template< size_t N> void function(double (&a)[N]); ... double *p; function(p); // this will not work. // I would like to cast p as to make it appear as double[N] Is it p...

In PHP... best way to turn string representation of a folder structure into nested array

Hi everyone, I looked through the related questions for a similar question but I wasn't seeing quite what I need, pardon if this has already been answered already. In my database I have a list of records that I want represented to the user as files inside of a folder structure. So for each record I have a VARCHAR column called "FolderS...