multidimensional-array

问题 I'm trying to create a function that creates a variable sized 2D funct array. I'm using the following code, which seems to work just fine on its own: typedef struct { //Starter Properties int TypeB; int TypeF; int TypeW; //Randomized Properties int RandB; int RandF; int RandW; //Derived Properties int Speed; } MapTileData; MapTileData **Map; int i, x=5, y=5; //Allocate Initial Space Map = (MapTileData**)calloc(x, sizeof(MapTileData)); for(i = 0; i < x; i++) { Map[i] = (MapTileData*)calloc(y,

问题 I've searched up and down for the fix to my issue, but none seem to work. One particular reference-- this and this, and especially this. However, no matter how I implement them, I receive an OutOfBoundsError, which I can't understand. The program is extra credit for a class. In truth, it is very simple-- Program Description: Use a two dimensional array to solve the following problem. A company has four sales persons (1 to 4) who sell five different products (1 to 5). Once a day, each

问题 So here is my code... Which I used in my Project. $app->post( '/chk_db', function () use ($app){ require_once 'lib/mysql.php'; $dx = connect_db('MyPhotos'); //XML RESPONSE $app->response->setStatus(0); $res = $app->response(); $res['Content-Type'] = 'application/xml'; $view = $app->view(); $view->setTemplatesDirectory('./'); $oArray = array("Status"=> $dx.status, "code" => $dx.code); return $app->render('chkdb.xml', $oArray); } ); so i have this Array as an input to the xml template (by the

问题 This question already has answers here : Extract diagonal element from each frontal slice of tensor (3 answers) Closed 3 years ago . I want to extract diagonals of a 3D matrix (Sigma below) into another 3D matrix (Sigma2 below). Sigma = repmat(magic(4),1,1,3); Sigma2 = nan(1,4,3); for i=1:3 Sigma2(1,:,i) = diag(Sigma(:,:,i)); end Is there a more efficient way for doing this? 回答1: You can. If you reshape Sigma to a matrix, selecting the diagonal of the 3D matrix is now selecting rows from a

问题 I have a Double dim. array: alarm_1_active_buffer[MAX_NUM_ALARMS][MAX_ALARM_STRING_SIZE]; I want to clear the buffer before filling it. Like this : for(index=0; index<MAX_NUM_ALARMS ; index++) { memset(&alarm_1_active_buffer[index], 0, MAX_ALARM_STRING_SIZE); memset(&alarm_1_active_buffer[index],string, MAX_ALARM_STRING_SIZE); } It is not working. 回答1: Since the arrays are laid in continuos address spaces, you don't have to do anything special for 2d arrays. You can simply use memset(alarm_1

问题 Sorry if my code seems bad, I'm not that experienced at programming. I need to transfer text from a .txt in the format of: Date-Name-Address-etc.. I'm reading in the file, then splitting the string with String.split("-"). I'm having trouble with the loops. try{ File file = new File("testwrite.txt"); Scanner scan = new Scanner(file); String[] test = scan.nextLine().split("-"); while(r<100){ while(c<6){ data[r][c] = test[c]; test = scan.nextLine().split("-"); c++; } r++; c = 0 ; } System.out

问题 I got code snippet from this site, which I used as shown below $data = array(); while($row = mysql_fetch_assoc($num1)) {$data['row'][] = $row;} while($row = mysql_fetch_assoc($num2)) {$data['row2'][] = $row;} $count = count($data['row']); echo "<table>" ; echo "<tr>"; echo "<td width='300' bgcolor='#99CCF5' align='Left' style='padding-left:30px'><b>Country</b></td>" ; echo "<td width='150' bgcolor='#99CCF5' align='center'><b>Mid Estimate 1</b></td>"; echo "<td width='150' bgcolor='#99CCF5'

问题 I have an array $array = array( 0 => array('a1', 'a2'), 1 => array('b4', 'b3', 'b5'), 2=> array('c1', 'c3'), 3=> array('d2' , 'd5', 'd6') ); I want to process the array as the program below : $data= array(); $tmp = array(); foreach($array[0] as $arr0){ $tmp[0]= $arr0; foreach($array[1] as $arr1){ $tmp[1]= $arr1; foreach($array[2] as $arr2){ $tmp[2]= $arr2; foreach($array[3] as $arr3){ $tmp[3]= $arr3; $data[]= $tmp; } } } } print_r($data); So how to use recursion for this program ?. 回答1: Try

问题 I have an array $array = array( 0 => array('a1', 'a2'), 1 => array('b4', 'b3', 'b5'), 2=> array('c1', 'c3'), 3=> array('d2' , 'd5', 'd6') ); I want to process the array as the program below : $data= array(); $tmp = array(); foreach($array[0] as $arr0){ $tmp[0]= $arr0; foreach($array[1] as $arr1){ $tmp[1]= $arr1; foreach($array[2] as $arr2){ $tmp[2]= $arr2; foreach($array[3] as $arr3){ $tmp[3]= $arr3; $data[]= $tmp; } } } } print_r($data); So how to use recursion for this program ?. 回答1: Try

问题 I have two (or more) associative arrays in Javascript: tagArray['title'] = ('<H1>title</H1>'); tagArray['text'] = ('<P>text</P>'); And want to join them like: tagFinal = tagArray.join("<BR>"); But the result is empty. It should result in: tagFinal = '<H1>title</H1><BR><P>text</P>'; What am I doing wrong? (I also tried without the tags, no difference) Or am I better off push() -ng it to a new array/string? 回答1: There's no such thing as an "associative array" type in JavaScript. There are