[matrix-multiplication] Forum Topics

import java.util.Scanner; public class BooleanProduct { public static void main(String[] args) { Scanner input = new Scanner(System.in); int n = 10; int[][] A = new int[n][n]; int[][] B = new int[n][n]; //Fill A and B int m,n2,p,q; System.out.println("Enter number of rows for matrix A : "); m = input.nextInt(); System.out.println("Enter …

I have this code that outputs the tfidf for all words in each file in the directory. I'm trying to transfer this to a matrix where each row correspond to each file in the directory and each column to all words in the files and I have some difficulty in …

Hi! I have this code, classes with matrices, overloading operator etc (this is just one part, I reduced it from original). #include<iostream> using namespace std; class matrix { protected: float* M; size_t m,n; public: matrix(){} matrix(size_t m,size_t n); matrix(const matrix& A); ~matrix(); matrix& operator=(const matrix& A); matrix operator+(const matrix& A) …

Hi, I have to create a program that creates N child processes, and they muliply the matrix. I have some base codes but when I try to run them they give me segmentation error and I cant find the problem. #include <stdio.h> #include <stdlib.h> #include <time.h> #include <unistd.h> #include <sys/types.h> …

Hello, I am getting the error: "Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:15" There is definetly something I am doing wrong but I cannot figure out what. Any help will be appreciated. The error in the output is poiinting to line 119; if(R[currentState][action] > -1){. I tried to change this but no …

create a code that will determine if a given input is(matrix) is a diagonal matrix, square matrix, or not

create a code that will read a file for an input which is a matrix,(rows and columns of the integers) and be able to output the transpose of it. original matrix 3X4 transpose matrix 4X3 1 2 3 4 1 5 9 5 6 7 8 2 6 0 9 …

Hi. I found this code online: #include <stdio.h> #include <sys/types.h> #include <sys/wait.h> #include <unistd.h> #include <sys/uio.h> #include <string.h> #include <stdlib.h> #include <ctype.h> /*********************************************************************** * Global Constants * ********************************************************************/ #define A_ROW 2 #define A_COL 3 #define B_ROW 3 #define B_COL 2 #define ARGUMENT_COUNT 13 #define PIPE_QTY 4 /*********************************************************************** * Global Variables …

Hello folks, This nitty problem is haunting me today. Here is the code I have written, but am not getting the expected output. This is a program for printing matrix in spiral order. #include<stdio.h> #include<stdlib.h> int main() { int rows,cols,i,j; int tr=0,rc,br,lc=0; /* tr = top row index. rc = …

How can we detect redundant rows.and maintain their count. if the rows are like 11111 11111 10101 11111 the result i want is 11111 4 10101 1

How do the numbers in a matrix relate to coordinates in 3D space. I've looked at a ton of tutorials for an answer but I still haven't come to an answer. They explain mainly the math which I try to use to answer my question, but I can't come to …

(Continued from [here](http://www.daniweb.com/software-development/cpp/threads/474128/column-major-not-shown-right#post2070227) ) I am trying to use column major order to a 2d matrix which I am using as 1d. int N=3,R=2; for (int i=0;i<N;i++){ for (int j=0;j<R;j++){ //printf("\nX[%d]=%d\t",i+j*N,res[i+j*N]); //column major // printf("\nX[%d]=%d\t",i*R+j,res[i*R+j]); //row major } printf("\n"); } but the column major doesn not work as it should. …

How i can make a Matrix by using 2 dimension arrays and function ? please i need answer thanks.

An n x n matrix is a positive Markov matrix if all of its elements are positive and the values in each column sum to one. Write a program to check whether a 3 x 3 matrix is positive Markov. Your program should prompt the user to enter a 3 …

Can anyone please tell me how can I do loop unroll void do_block (int lda, int M, int N, int K, double* A, double* B, double* C) { /* For each row i of A */ for (int i = 0; i < M; ++i) /* For each column j …

Hello! I have a exercise about matrices. here is the question: is given a square matrix [M] [N] which determines the amount of each column. Thank u!

Well I have created this one and on my computer it is working. I would like to hear about some alternative solutions. INTRODUCTION This time I have one algorithm, but to understand it we need to consider a few terms. First of all, we should be familiar with the pangrams. …

I need help with transposing a matrix. I already did the transpose matrix using 2 arrays. But I can't figure out how to do it using only one array. So read a matrix and create the transpose within itself. Do I use the swap or what? Any help would be …

Bonjour tout le monde , Voila ma question : je prépare un TP en c qui consiste a crée un fichier input contient la taille en premier ligne et 2 matrice d'entier dans les autres lignes ex : 4 Matrice1 1235 5456 5428 2415 matrice2 8795 2514 6524 8562 le …

This is a program I wrote for my x86 assembly class which generates matrices, multiplies them, and computes how long the arithmetic took. It uses Irvine32.inc which came with the textbook.

hi all i use gecode solver to solve my model ; but i get this error Access Violation when reading of the location 0x0000001c and i don't konw how to fix it here is my code : #include <gecode/driver.hh> #include <gecode/int.hh> #include <gecode/minimodel.hh> #include <iostream> #include <vector> using namespace Gecode; …

hello, I'm trying to resolve an issue that is requested to create a game with the same kind of Flow Free. Where I have to create a NxN matrix, which must be greater than or equal to 2 and less than or equal to 7. The size is selected by …

Hi everyone I'd like to know how I can fill a matrix [n] [m] from a vector of size n * m Thank you very much every one

public Matran Hieu2MT(Matran a, Matran b) { Matran c = new Matran(this.So_Hang, this.So_Cot); if (a.So_Hang == b.So_Hang && a.So_Cot == b.So_Cot) { for (int i = 0; i < this.So_Hang; i++) { for (int j = 0; j < this.So_Cot; j++) c.MT[i, j] = a.MT[i, j] - b.MT[i, j]; } …

Hi all,can enyone give a solution ,how to emplement random function,so it could randomly select numbers from the saved text file(grid) and output in matrix . What i try to do is:Create animation project,but would like color matrix as a background.What i did so far is came up to the …

2. Write a function that takes an an MxN matrix such that if an element in this input matrix is 0, its entire row and column is set to 0. void changeMatrix(int *Mat[],int M, int N)

def matrix(mat, num): for i in mat: for j in i: print(j * num) So I'm trying to make a code that multiplies a matrix by a number, my code above is not working and i think the reason is the for statements could be wrong, so what i tried …

i have written a code to out put the result of multiplication of two matrices using joption frame, but it outputs the result on separate windows, dont know how to output them on the same window. this is my code: 'public class matrixmul { /* * To change this template, …

Hi.. im new to java and im writing a code in which i have to show a main menu with matrices addition amd multiplication.. i have almost com[leted it.. but i dont know how to show the option of "MENU AGIAN yes/no"?? what could be the code of it.. cod …

Hi Guys, I am trying to teach myself templates in C++. My current assignment is to create a matrix class by using vector of vectors. I have got most of it done but my code is crashing when I try to overload the random access operator in my matrix class. …

float det(float A[][10],int m) { float B[10][10],d=0; int i,a,b,x,y; if(m==2) return (A[0][0]*A[1][1])-(A[1][0]*A[0][1]); else { x=0;y=0; for(i=0;i<m;i++) { for(a=0;a<m;a++) { if(a==i) continue; else { for(b=1;b<m;b++) { B[x][x]=A[a][b]; x++; } } } if(i%2) d-=det(B,x); else d+=det(B,x); } } return d; } I tried to run the program, but it exits with error …

I am trying to create a program which adds substracts two matrices. Using switch statements. I am not sure that I am making the correct function calls. I ve been struck on this for two days looking for some guidance. Please see below my code. I am trying to create …

hi all, how to do multiplication matrix with iteration and stop iteration if value >= 5? $data = array( array(1,-0.52836), array(-0.52836,1,), ); for ($i=0;$i<count($data);$i++) { for ($j=0;$j<count($data[$i]);$j++) { $R2[$i][$j] = (($data[$i][0]*$data[0][$j])+($data[$i][1]*$data[1][$j])); } } echo "<pre>"; print_r($R2); echo "</pre>"; result: 1.279164732 -1.056721269 -1.056721269 1.318545629 how to do nested loop from process …

Hey Guys, I need your expertise. Please help me. In the following program, 2 matrices and given values and then displayed. The program works fine but I really can't understand how it works. #include <stdio.h> #include <stdlib.h> void getmat(int a[50][50],int n) { int i,j; for(i=0;i<n;i++) for(j=0;j<n;j++) scanf("%d",&a[i][j]); } void printmat(int …

i have matrix which contains first column as index second and third as values in one c file and in other file [index operations] when i call the two files from the main program it should be [1 2 3 ] [1 Add] [1 5] file 1 file2 main program …

Hi All, I was trying to evaluate the matrix coefficient by the method of constrained least square fitting. The linear matrix differential equation looks like X'=AX, where X' and X are two vectors and A is matrix. Moreover, there is a constraint on diagonal matrix element and which is a(i,i)=-Sum(i/=j)a(i,j). …

i have a folder that has 1000 text files i want to read all of them character by character and sore them in different matrices . the data in a text file is like 101010101001000100000000001 101010010101000000000000101 101010010100101001010010100 000101001010010010100100101 i want to make a matrix from this data and similar 999 …

Here is a small--complete--program that includes a sub-routine that inputs two matrices and then multiplies them. Notes: * 1) I happen to like taking input from a text file. It eliminates the need to type input from the console, especially when debugging, it prevents the possibility of making typos. * …

I want to write a class that do operation on two matrices by 2D vector but i have some problems with the 2D vector , any one can help me?

Don't know why my code crashes when j=317. I thought was the matrix dimensions, so tried some numbers. Nothing particular happened. Every help would be very usefull. #include <stdio.h> #include <math.h> int main(){ int T,i,j,t,c,r[T],Jmax,Z,k; float v[10],R[10],EBNo[10],trapserv[10],a[10],w[10],Pblock[10]; float L[j+1][j],B[T+1][j+1],b[T+1][1000],P[T+1][j+1],q[j+1],qnorm[j+1]; float sigma,mtimi,mtimic,CV; float Nmax,g,W,EIother,C,Nown,No,totofcell,sumq; float Gamma,bita,QA,LA,BA; float x; //Data input// ` …

Hi.. d1 = a1*x1 + b1*x2 + c1*x3 d2 = a2*x1 + b2*x2 + c2*x3 d3 = a3*x1 + b3*x2 + c3*x3 Knowing all of a,b,c,d, I have to find x1, x2, x3. As you might noticed, this is high school math. But, how do I write the code to …

I need to make program that calculate multiplication of matrice i made it in main now i need to make it in functions would anybody hepl me with my problem that is my code #include <iostream> using namespace std; #include <cstdlib> void fn(int **arr) { } void fn2 (int **arr2){ …

I need to develop a Geodetic Application for Transformation Parameters determination. At this stage, I am in need of a matrix class/functions which could assist me out in the process. I am in need of this as developing my own class to handle matrix operation is the problem. Can anyone …

please help me out, i want a code of algo by i can find out the solution, i know hoe to multiply 2x2 or 3x3 matrices but i want user friendly code in which user can chose option. help me please its in my project.

Hey guys, I am incredibly new to c++ and need a little help on a matrix multiplyer program... [code] #include <iomanip> #include <iostream> using namespace std; int main() { int **mat1; int **mat2; int **result; int row,col; cout<<"Please enter row/col"<<endl; cin>>row>>col; mat1 = new int *[row]; mat2 = new int …

i need to help in multiplying two matrices by pointer in c++

This code example shows how to create a dictionary with row,column indexed (r,c) key tuples from a typical list of lists 2D matrix. Also an example is shown of the ease of processing the resulting dictionary.

Hello all! So I have an assignment to create a matrix multiplication program using classes (no friend functions). To be quite frank, I am completely lost and have no idea what I'm doing here. The directions state that the private class hold 3 matricies and also that I need to …

Can any one help me out to provide code for a following matrix for N numbers? 12345 21234 32123 43212 54321 Please Help me out for this matrix