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C Programming; Producing a 2-Dimensional Matrix with Random Numbers without Repetition

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问题 I'd like to produce a 6x6 matrix by inserting random numbers to the elements in the row and column without repeating. This is my code so far. Thank you for your help! #include <stdio.h> #include <stdlib.h> int main(void) { int array[6][6]; int rows, columns; int random; srand((unsigned)time(NULL)); for(rows=0;rows<6;rows++) { for(columns=0;columns<6;columns++) { random=rand()%36+1; array[rows][columns] = random; printf("%i",array[rows][columns]); } printf("\n"); } return 0; } 回答1: To avoid

C Programming; Producing a 2-Dimensional Matrix with Random Numbers without Repetition

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creating a multidimensional array (nXn) matrix using javascript

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问题 I am trying to create a matrix table. The values to be plugged into the matrix will be user input from an html table (basically a unique pairing table which pairs two elements at a time and for each pair a user can select which he prefers and by how much it is prefered on a scale of 1-9 using radio buttons). it is the preferences i.e. 1-9 that gets plugged into the matrix table and the number of unique pairing that detemines the lenght of the matrix. when the matric is generated i want to

大魔法师

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一、题目点此看题二、解法很容易看出来是线段树打标记的题，但是标记的顺序就很恶心。有一个很简洁的解法，就是把所有的修改操作看做矩阵乘法，标记也用矩阵维护，我们的值用一个 4 × 1 4\times1 4 × 1 的矩阵维护（设 A A A 是值， B B B 是操作矩阵，用 B × A B\times A B × A 更新值）： A B C l e n \begin{matrix}A\\B\\C\\len\end{matrix} A B C l e n 然后操作分别用下列矩阵维护（顺序是操作编号 1 − 6 1-6 1 − 6 ）： 1 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 \begin{matrix}1&1&0&0\\0&1&0&0\\0&0&1&0\\0&0&0&1\end{matrix} 1 0 0 0 1 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 1 0 0 0 0 1 \begin{matrix}1&0&0&0\\0&1&1&0\\0&0&1&0\\0&0&0&1\end{matrix} 1 0 0 0 0 1 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 1 0 0 1 0 1 0 0 0 0 1 \begin{matrix}1&0&0&0\\0&1

Using multiple colors in matrix batch file

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问题 I've been messing around with batch files a bit, and have this code running. I did not write it, I found it, and it just runs random blue numbers in command prompt until you exit. My question is this, I want to make one where every character is a random color. so essentially, it'll look like a rainbow vomited skittles on my screen. But i digress. That is my challenge, and so far i have failed at solving it. Any ideas would be great! @echo off color 01 cls :a set /a a=%random% if %a% geq 16384

Creating a Matrix with ArrayLists

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问题 I want to create an ArrayList-matrix with n-rows and m-columns, for example 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 I've already written a code for creating such a matrix but my code doesn't display the values when I clear the list containing the column-data. Here is my package testproject; import java.util.ArrayList; public class TestProject { public static void main(String[] args) { ArrayList<Integer> intList = new ArrayList<>(); ArrayList<ArrayList<Integer>> mainList = new

Generating random correlation matrix with given average correlation

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问题 I would like to generate a random correlation matrix in R of 1000*1000 where the average correlation (excluding diagonal) is 0.3. I looked at genPositiveDefMat from library clusterGeneration but I couldn't figure out how to specify a given correlation. 回答1: A boring example of such a matrix would be C = (1-m)*I + m*U*U' where I is the identity matrix, U a vector of all ones and m = 0.3. C is positive definite and the average (indeed every) off-diagonal element is m. So we could try generating

R : Multiply 2 matrices column wise to create a third Matrix

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问题 I have 2 matrices, say M and N of sizes m by n and m by l respectively. I would like to create a third matrix of size l by n such that the (i,j)th entry of the new matrix is the sum of the vector obtained by multiplying i'th column of M with the j'th column of N. For eg: M = matrix(1:16, 4,4) > M [,1] [,2] [,3] [,4] [1,] 1 5 9 13 [2,] 2 6 10 14 [3,] 3 7 11 15 [4,] 4 8 12 16 N = matrix(20:27,4,2) > N [,1] [,2] [1,] 20 24 [2,] 21 25 [3,] 22 26 [4,] 23 27 So, the (1,1)th element of my new matrix

Can you recommend a source of reference data for Fundamental matrix calculation

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问题 Specifically I'd ideally want images with point correspondences and a 'Gold Standard' calculated value of F and left and right epipoles. I could work with an Essential matrix and intrinsic and extrinsic camera properties too. I know that I can construct F from two projection matrices and then generate left and right projected point coordinates from 3D actual points and apply Gaussian noise but I'd really like to work with someone else's reference data since I'm trying to test the efficacy of

Output as a matrix in fortran

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问题 I want the output as a matrix in a binary format but I keep getting it as a single long array. Can anyone suggest where I am going wrong program ascii_to_binary implicit none c c declarations integer iw,jy,i real A(47,52),z(47,52),undef real x(47,52) logical exist c---------------------------------------------------- c read in the index, insert name of file in input_file undef = -9999. c read in the index, insert name of file in input_file inquire(file="weekly_mean_sce.txt", exist=exist) if