multidimensional-array

问题 In C#, can someone help me assign multiple string arrays to a 2d string array? Here is my code: string[] test1 = new string[5] { "one", "two", "three", "four", "five" }; string[] test2 = new string[5] { "one", "two", "three", "four", "five" }; string[] test3 = new string[5] { "one", "two", "three", "four", "five" }; string[] test4 = new string[5] { "one", "two", "three", "four", "five" }; string[,] allTestStrings = new string [4, 5]; allTestStrings[0] = test1; allTestStrings[1] = test2;

问题 Write the method: public int sumRow(int[][] matrix, int row) that sums row row in the 2D array called matrix. Given: public void run() { System.out.println(sumRow(new int[][]{{70,93,68,78,83},{68,89,91,93,72},{98,68,69,79,88}}, 2)); System.out.println(sumRow(new int[][]{{1,1,1}, {2,2,2}, {3,3,3}}, 0)); System.out.println(sumRow(new int[][]{{2,4,6,8,10}, {1,2,3,4,5}, {10,20,30,40,50}}, 2)); } So far I have: public int sumRow(int[][] matrix, int row) { int sum = 0; for(int i = 0; i < matrix

问题 Write the method: public int sumRow(int[][] matrix, int row) that sums row row in the 2D array called matrix. Given: public void run() { System.out.println(sumRow(new int[][]{{70,93,68,78,83},{68,89,91,93,72},{98,68,69,79,88}}, 2)); System.out.println(sumRow(new int[][]{{1,1,1}, {2,2,2}, {3,3,3}}, 0)); System.out.println(sumRow(new int[][]{{2,4,6,8,10}, {1,2,3,4,5}, {10,20,30,40,50}}, 2)); } So far I have: public int sumRow(int[][] matrix, int row) { int sum = 0; for(int i = 0; i < matrix

问题 I get nullpointerexception when I try to fill a 2D array with process IDs, it is 2D since there is a unlimited list of PIDs for each system and I need to eventually return that back to my main code (set to void now since just a prototype test function). Any ideas would be great private void testfunctionA (List<String> additionalPC) { // A 2d array that will contain a list of pids for each system - needs to be strings and not integers String[][] pidCollection = new String[additionalPC.size()][

问题 Below is my array structure: Array ( [2016-09-01] => Array ( [1] => Array ( [hours_type_id] => 1 [date] => 2016-09-01 [hours] => 8.00 [ts_weekly_id] => 53428 ) [2] => Array ( [hours_type_id] => 2 [date] => 2016-09-01 [hours] => 0.00 [ts_weekly_id] => 53428 ) [10] => Array ( [hours_type_id] => 10 [date] => 2016-09-01 [hours] => 0.00 [ts_weekly_id] => 53428 ) ) I am trying to get all hours column in another array. Below is the code: $billcols = array_column($billhours, "hours"); Is there any

问题 Any idea how to perform a trim operation on a 2d array of strings e.g. 3x3 using Java stream API and collect one back to same dimension 3x3 array? The point is to avoid using explicit for loops. The current solution would be simply to do a for loop like: String arr[][] = { {" word ", " word "}, {" word ", " word "}, {" word ", " word "}}; for (int i = 0; i < arr.length; i++) { for (int j = 0; j < arr[i].length; j++) { arr[i][j] = arr[i][j].trim(); } } And that works, but I'm trying to come up

问题 Any idea how to perform a trim operation on a 2d array of strings e.g. 3x3 using Java stream API and collect one back to same dimension 3x3 array? The point is to avoid using explicit for loops. The current solution would be simply to do a for loop like: String arr[][] = { {" word ", " word "}, {" word ", " word "}, {" word ", " word "}}; for (int i = 0; i < arr.length; i++) { for (int j = 0; j < arr[i].length; j++) { arr[i][j] = arr[i][j].trim(); } } And that works, but I'm trying to come up

问题 Any idea how to perform a trim operation on a 2d array of strings e.g. 3x3 using Java stream API and collect one back to same dimension 3x3 array? The point is to avoid using explicit for loops. The current solution would be simply to do a for loop like: String arr[][] = { {" word ", " word "}, {" word ", " word "}, {" word ", " word "}}; for (int i = 0; i < arr.length; i++) { for (int j = 0; j < arr[i].length; j++) { arr[i][j] = arr[i][j].trim(); } } And that works, but I'm trying to come up

问题 I am looking for a method to find all parents of a multidimensional PHP array I have this following array: Array ( [files] => Array ( [a] => Array ( [ab] => Array ( [0] => ab.jpg ) [0] => abc.jpg ) [b] => Array ( [ba] => Array ( [bab] => Array ( [0] => abc.jpg ) [bac] => Array ( [0] => abd.jpg ) [0] => ade.jpg ) ) [c] => Array ( [cb] => Array ( [0] => abf.jpg ) ) ) ) I want to find Parents by key, for example, To find all parents of key: 'bac' It should return: files->b->ba->bac Any

问题 I want to link and sort in descending order a two dimensional array. I coded my program in a way so that you can print the array but it is not sorted. How can I make it sorted? This is a program to calculate the number of hours worked by 8 employees during the week (7 days), and print them out in descending order: public class WeeklyHours { public static void main(String[] args) { double[][] employeeWorkHours = { { 2, 4, 3, 4, 5, 8, 8 }, { 7, 3, 4, 3, 3, 4, 4 }, { 3, 3, 4, 3, 3, 2, 2 }, { 9,