Why does C need arrays if it has pointers?
If we can use pointers and malloc to create and use arrays, why does the array type exist in C? Isn't it unnecessary if we can use pointers instead? Thanks. ...
arrays
Counting the number of letters in a word by PHP
I want to create an array which has two columns. The output should contain only the existing letters in the word with their amounts. The wanted output of the following code a 3 s 2 p 1 What is wrong in the following PHP code? <?php $alpha = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','...
Using associative array values from within the same array
I'm trying to access an associative array's key and value from within the same array. If I have 3 pairs in my array. Can I use the value of let's say the values of something and other within the third one another? $gar = array("something" => "something value", "other" => "other value", "another" => something...
VBA Public Array : how to ?
Hi folks ! So today's problem is getting me mad because that should be easy and i can not find the answer : How to declare a public array in VBA ? I'm using an array with the letters A, B, C,... because i'm working with Excel cells, and i don't want to declare it in every function i create, right ? I've tried to look on the web first an...
Are Arrays as lvalues in JavaScript ECMAScript-compliant?
Firefox 3.5.3 (at least) allows me to write code like : var array = [4, 5, 6]; var foo, bar, baz; [foo, bar, baz] = array; at which point foo => 4 bar => 5 baz => 6 which can be quite helpful for code clarity. Is that considered ECMAScript-compliant? I didn't see anything in the specification, but JSLint returns an error. ...
Traverse 2D Array in Spiral pattern using recursion.
Hi, I am preparing for an interview and have been stuck on this question for quite some time now. Could anybody please help me with the code. If not complete then may be a snippet of it? Please.. ...
Parsing JSON Object Array
Hello All, I am very new to using Jquery and Json. I have a servlet that is returning an array of JSONObject's ( basically a JSONArray object ). I am trying to parse this array within JavaScript and am running into trouble here. I have a javascript variable "var result" that gets the result from the servlet and I am trying to parse it...
How to show multiple results from MySQL Array
Here is my current code: $sql = "SELECT * FROM user_posts"; $result = mysql_query($sql); $row = mysql_fetch_array($result); while ($row = mysql_fetch_array($result)) { print $row['message']; } My goal is to show all of the data in that SQL database through an array. But currently, it only shows the latest one and not...
PHP Multidimensional Array Sum/Erase Problem
Hi, I have an array that looks like the following: The format: [Person#] => Array ( [Bank#] => Balance . . [Bank#] => Balance ) The Array: [1] => Array ( [0] => 707 //Person #1 has 707 balance in Bank #0 [1] => 472 //Person #1 has 472 balance in Bank #1 ) [2] => Arra...
A newbie C question
Hello, I am trying to understand a code, what exactly &(ipA[iLower + 1] stands for in the below code (partition function of a quicksort? void Partition(int* ipA, int iSize) { // Partitions of size 0 or 1 are already sorted if (iSize <= 1) { return; } // Select a pivot from the array randomly int iPivot = ip...
How to retrieve tree nodes children (recursive function help)
I have a binary, the database table of relationships looks like this: +----+----------+---------+-----+ | id | parentID | childID | pos | +----+----------+---------+-----+ | 1 | 1 | 2 | l | | 2 | 1 | 3 | r | | 3 | 2 | 4 | l | | 4 | 3 | 5 | r | | 5 | 4 | 6 | l ...
Java: varargs and the '...' argument
Hello, Consider the method declaration: String.format(String, Object ...) The Object ... argument is just a reference to an array of Objects. Is there a way to use this method with a reference to an actual Object array? If I pass in an Object array to the ... argument - will the resultant argument value be a two-dimensional array - b...
Remove duplicates from multi-dimensional array based on higher points
Hi there, I'm racking my brains trying to think of a solution. I can find plenty of solutions to remove dupes from a 2d array but I need to remove dupes where a value is lower than the other. Here is the array: Array ( [basketball] => Array ( [0] => stdClass Object ( [id] => 2...
how does this array indexing work?
I'm trying to understand how this exactly works (I know what it does, I just don't understand how). As far as I know, this reads a char until EOF is reached, and if its a digit, put it in the array: while ((c = getchar()) != EOF) if (c >= '0' && c <= '9') ++ndigit[c-'0']; I understand I can index an array like this: some_array[...
Array of buffers in C programming?
I am trying to create an array of buffers. I need to store an integer into each buffer. I'm not quite sure how this should be done. int BUFFER_LENGTH = 50; //the size of each buffer int numberOfBuffers = 10; //number of buffers int *pBuffers; //array of buffers pBuffers = (int *) calloc (numberOfBuffers, sizeof(int)); /...
PHP: Create array of arrays, ignoring empty arrays
I need to create an array of arrays. I have been using array_map(null,$a,$b,$c) to do this and it works fine, however, it doesn't work if one of the mapped arrays doesn't exist. To get around this problem I have used: $myArray= array(); if (isset($a)) { array_push($myArray,$a); } if (isset($b)) { array_push($myArray,$b); } if (isset(...
FasterCSV: columns into an array -- rails
I'm trying to get fastercsv setup so that rather than parsing each row, it will place each column into an multi array. CSV import file: id, first name, last name, age 1, joe, smith, 11 2, jane, doe, 14 Save to array named people: people[0][0] would equal id people[2][1] would equal jane This is what I currently have: url = 'http://u...
Writing / Reading Value to an Array in C
I must be going insane. This is incredibly simple so I am apparently overlooking something: Here is my code: int salesarray[20]; scanf("%d",&sales_input); printf("sales_input is %d",sales_input); salesarray[i] = sales_input; printf("salesValue is %d",i,salesarray[i]); Here is what I will see: sales_input is 2salesV...
Detech event target from which position of Array
I have a loop MC which will be duplicate to stage several times according to every click. Now I want to detect if the MC being click belongs to which position in the array. private function levelsBG():void { LIST = new MovieClip(); d++; for (var i:Number=0; i<myXML.children().length(); i++) { listMC=new MovieClip(); LIS...
Array Performance/Optimization
I am reading a CSV file and I would like to cache the results in an array. This is my getter/setter: private RedirectionRule[] RedirectionRules { get { if (_redirectionRules == null) { return new RedirectionRule[MAXLENGTH]; } return _redirectionRules; } set { _re...