multidimensional-array

问题 I have an array like this: Array ( [0] => ing_1_ing [1] => ing_1_amount [2] => ing_1_det [3] => ing_1_meas [4] => ing_2_ing [5] => ing_2_amount [6] => ing_2_det [7] => ing_2_meas ) And I want to group the values into an array like this: Array ( [0] => Array( [0] => ing_1_ing [1] => ing_1_amount [2] => ing_1_det [3] => ing_1_meas ) [1] => Array( [0] => ing_2_ing [1] => ing_2_amount [2] => ing_2_det [3] => ing_2_meas ) ) There may be many other items named like that: ing_NUMBER_type How do I

问题 I have an array like this: Array ( [0] => ing_1_ing [1] => ing_1_amount [2] => ing_1_det [3] => ing_1_meas [4] => ing_2_ing [5] => ing_2_amount [6] => ing_2_det [7] => ing_2_meas ) And I want to group the values into an array like this: Array ( [0] => Array( [0] => ing_1_ing [1] => ing_1_amount [2] => ing_1_det [3] => ing_1_meas ) [1] => Array( [0] => ing_2_ing [1] => ing_2_amount [2] => ing_2_det [3] => ing_2_meas ) ) There may be many other items named like that: ing_NUMBER_type How do I

问题 I have my data as following: { meta: { format: "csv", info: "desc", columns: [ { id: "Name", type: "Text", length: 32 }, { id: "Text", type: "Text", length: 128 }] }, rows: [ ["John","xxxx"], ["Alpha","yyyy"], ["Beta","wwww"], ["Gamma","zzzz"]] } Now, I am struggling to map the records to a Table control as Columns and Rows . Column seems straight forward, straight map, but the rows since lacks a mapping to column I wonder what could be the simplest way. Approach Steps: Make a keys[] from

问题 I have a multidimensional-array which looks like this: $array = ( [0] => array ( ['WS'] => array( [id] => 2, [name] => 'hello' ) ) ), [1] => array ( ['SS'] => array( [id] => 1, [name] => 'hello2' ) ) ), [2] => array ( ['WS'] => array( [id] => 5, [name] => 'helloAGAIN' ) ) ) As you can see, $array[0] and $array[2] have the same key [WS]. I need a function to find those "same keys". Afterthat I would merge these two arrays into one. f.e. $array = ( [0] => array ( ['WS'] => array ( [0] => array

问题 i'm doing something like excel, i have something like this: 1 2 3 A1 B1 C1 where it replaces the content for specified content, where A1 replaces the content for 1. B1 replaces the content of 2...and etc... i'm using a multidimensional array, and i do the things like this: int offset = 0, readCharCount; while(sscanf(matris[i][c] + offset, "%c%d%*c%n", &col, &linha, &readCharCount) == 2){ //printf("%c, %d\n", col, linha); //strcpy(matris[i][c], matris[linha-1][col - 'A']); offset +=

问题 How can I initialize 2d array with a list of 1d arrays? void main() { int a[] = { 1,2,3 }; int b[] = { 4,5,6 }; int array[][3] = { a,b }; } 回答1: raw arrays in C++ are kind of second class citizens. They can't be assigned and they can't be copied, which means you can't use them to initialize other arrays, and their name decays into a pointer in most circumstances. Lucky C++11 offers a solution. std::array acts like a raw array, but it doesn't have the drawbacks. You can use those instead to

问题 I am trying to add multiple strings into a multidimensional array in VBScript. I hope I can explain it in a short way: Every string contains some data separated by commas. Now I would like to add all these data into an array, one dimension for every string. For example Dates = "12.02.2016, 13.08.2017, 19.05.2018" Temperatures = "23.1, 24.9, 75.3" Humidity = "26, 29, 95" It is no Problem to get every String into an one dimensional array by using AmbientConditionsArray = Split(Dates, ", ") But

问题 I've been trying to figure out what exactly is happening here. I'm just trying to figure out what the 2 lines are doing that I've commented on below. I found this program that doesn't declare the full dimensions of the array (instead of new int[10][5]; it just decides to not declare it by saying 'new int[10][];' It's like the 2nd array length doesn't matter (changing it to 1 or 100 doesn't affect the output). int[][] tri = new int[10][]; //this lack of giving the size of the 2nd array is

问题 I need to solve a system of linear equations Lx=b, where x is always a vector (3x1 array), L is an Nx3 array, and b is an Nx1 vector. N usually ranges from 4 to something like 10. I have no problems solving this using scipy.linalg.lstsq(L,b) However, I need to do this many times (something like 200x200=40000 times) as x is actually something associated with each pixel in an image. So x is actually stored in an PxQx3 array where P and Q is something like 200-300, and the last number '3' refers

问题 How do I initialize a multi-dimensional array of a primitive type as fast as possible? I am stuck with using multi-dimensional arrays. My problem is performance. The following routine initializes a 100x100 array in approx. 500 ticks. Removing the int.MaxValue initialization results in approx. 180 ticks just for the looping. Approximately 100 ticks to create the array without looping and without initializing to int.MaxValue. Routines similiar to this are called a few hundred-thousand to