291 Topics
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 | 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. … |
| | **hello peeps and geeks, i am missing the MinSpanningTree function here.. any help please? need to fill up the function to get a) Minimum spanning tree cost for the graph b)Spanning tree path for the graph. E.g in matrix or adjancency list. ** #include <iostream> #include <ctime> // For time() … |
 | 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; …  |
 | I saw this segment and I wasn't sure if I was excited or scared... but my feelings were urging more towards fear. I just do not know if it's a good idea to start microchipping people for better intelligence. Especially our children. Are we slowly turning ourselves in robots? As … |
| | 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 |
| | I am a beginner I am using with CORSIKA software. cosika's outputs are text files with 8 or 7 column and more than 2000 row(like matrix) . Arrays of this matrix are number in Scientific notation like fallowing image  I want to read data in 7th column and … |
| | 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 …  |
 | 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 … |
| | 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 didn't write this, the credits are in the code. It's a code-golf version, and I'm sorry about that. I am trying to 'decode' it but I don't have the skills, so the 'decoded' version doesn't have the right colors. This is an example of what you can do with … |
 | 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){ … |
| | 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 …  |
 | 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  |
| | I am trying to create a graph from a 2d matrix of booleans. When the index [i][j] == 1, I need to create a link or edge from node[i] to node[j]. I am doing some thing wrong. I have created a class file with a struct node and some basic … |
| | Please visit http://www.cuteework.com/members.php Login button not work. here is members.php file details. <?php session_start(); session_register("id_session"); session_register("password_session"); include "header.php"; include "config.php"; $a=""; $b=""; if ($_POST) { $a=trim($_POST["id"]); $b=trim($_POST["password"]); $a=str_replace("'","",$a); $b=str_replace("'","",$b); $a=str_replace("\"","",$a); $b=str_replace("\"","",$b); } if ($a=="" || $b=="") { if ($_SESSION["id_session"]=="" || $_SESSION["password_session"]=="") { ?> <form action=members.php method=post> <br><br><Center><table><tr><td colspan=2 align=center><h3>Members Login … |
| | I have a variable x which varies from -160 to 160 through steps of 10. `x = -160:10:160;` I have a matrix T1 which is of the form ` cos(x) 0 +sin(x) 0.00; sin(x) 0 -cos(x) 0.00; 0.0000 1 0.00000 0.67; 0.0000 0 0.00000 1.00 ` How can that be … |
| | I need to multiply 2 matrices together using threads to computer each element. Ive been working on it myself but Im stuck at this point and Im getting an error. Here is the code I have. Can someone help in explaining what is wrong here or how to correct it? … |
| | you will write a program to solve linear equations given in upper triangular form. There are N equations, and N unknowns. This is equavalent to the following matrix multiplication [A][X]=[B], where A is a square matrix (N by N), X and B are vectors with size N. Back Substitution: First, … |
| | What I want to do is to take a 2d int array and use it to create a Matrix (a class I will be defining) which will effectively wrap all the values of the 2d array together so that I can perform matrix multiplication for coordinate translation. I am rather …  |
| | I mainly need help with creating the 3 by 4 matrix (part 3 of the assignment) as i am confused as how i would create it. However this is the entire assignment: 1. Write a function that returns the sum of all the elements in a specified column in a … |
| | Hey guys,I'm new,but I study C programming language and I have this awfull problem. I have make a matrix A[n][n],in which n is an odd positive number(of course),and the matrix must "unwrap" itself with the number 1 in the middle then 2 to the top,then clockwise 3,4,5,..etc,until it wraps the … |
| | Hello all... I want the multiplication of the same matrix but in third, forth, fifth... degree. I have made the C++ program and this is the code: #include <stdio.h> #include <stdlib.h> #include <iostream> using namespace std; #define WIDTH 3 #define HEIGHT 3 void main(){ int a[HEIGHT][WIDTH]; int b[HEIGHT][WIDTH]; int n; … |
 | Hello, I don't want to look like I am following other forums, but, wouldn't it be a good idea for users (with a certain amount of rep) to have basic moderation tools, or, atleast the ability to edit posts by users and: 1) The person who posted can accept this … |
| | I get this issue but i dont understand it completly. Found some suggestions online but seems they depend on the source code. This is my code and i get the error where the arrow is int j; float aa=0, modanum, count=0, temp; float[] mod =null; float[] fin = null; int[] … |
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| | not sure if this is the right place to ask, but i need some help for my problem here. i want to find inverse, upper triangular and determinant for a matrix. but i'm not sure why it doesn't work like what i want. for now, i just want try to … |
| | The goal of the program is to make a sparse matrix using circularly linked lists. basically its a matix what only has values at the locations entered, and the rest of the lactions are not defined. the question i have is the logic for the code. how would i go … |
| | OpenGL GLUT **My question is at the end of this topic** 1) a) Use your logo you drew within a world coordinate space that has 0,0 at the center. You may choose any width and height for your world coordinate space, glut window and viewport. Be sure that you separate … |
 | I decided that before I would actually write the code for my planned inventory system in a game I am writing I would test it out in a small project first to make sure I know what needs to be done and if I needed to change anything. So I … |
| | I want to write a program that does the following: reads and integer matrix from stdin and outputs the input matrix, its transpose and multiplication of the input matrix with its transpose. I limited the matrix to a 10x10. I want to ask the user to enter a number of … |
| | Hi, i need to create a binary matrix (one which elements can only be 1 or 0) in openCV. The nearest that I was getting is creating a matrix which elements are 8-bit values using the CV_8UC1 dataType. There must be another dataType which specifies that the matrix elements are … |
| | hi.... Let F be the matrix 1 1 1 0 Then F^n (2x2 matrix multiplication) equals F(n+1) F(n) F(n) F(n-1) because: (F(n+1) F(n) ) (1 1) = ( F(n+1)+F(n) F(n+1)) (F(n) F(n-1)) (1 0) = ( F(n)+F(n-1) F(n) ) Can anybody tell me or give me the hint that how … |
| | Here's my code: #include<stdio.h> #include<conio.h> int main(void) { int a[100][100]; /* initializing matrices to '0' */ int b[100][100]; int c[100][100]; /*matrix-c for multiplication*/ /*r1,c1 are rows and coloumns for matrix-a.r2,c2 for matrix-b.*/ int r1,c1,r2,c2; int i,j,k; clrscr(); printf("enter the no of ROWS and COLOUMNS for MATRIX-A\n"); scanf("%d %d",&r1,&c1); printf("enter the …  |
| | for (k=0; k<M; k++) for (i=0; i<N; i++){ c[i][k]=0.0; for(j=0;j<P;j++) c[i][k]+ =a[i][j]*b[j][k]; I have implemented the above sequential matrix-matrix multiplication algorithm, but i'm not sure about implementing a method to display the output to verify that the algorithm works as expected. |
| | How can I compare Dimensional arrays using iterators? My attempt is below but I gave up and used indexing instead. I plan to change comparing doubles with == to use epsilon later. Also should I be using vector of vectors? //In my class, Data is defined as std::vector<std::vector<double>> Data; bool … |
| | I know it's a bad practice to post the same question on more than one help site (I posted it on Stackoverflow, but after some time your question loses its place on the "active" list and people stop reading it) but I'm really desperate here. So my question is: I … |
| | hi, this is the code for my class for matrix multiplication. but i am not getting the required result of multiplication getting error as "Number of indices exceeds the number of dimensions of the indexed array" please help me to solve this problem... thaking you..... Public Class complexnum Private x … |
| | Hi again, all--- I'm trying to write a function that will add two matrices and output the resulting matrix. I've got two matrices already and everything, now i just need to write the function that i can use to call in my switch loop (The program must read two matrices, … |
| | How to make this program #include <stdio.h> #include <conio.h> #include <math.h> int main(){ clrscr(); for(i=0;i<10;i++) for(j=0;j<10;j++) printf("a[%d][%d] = %d \n",i,j,a[i][j]); printf("cu pointer\n"); for(i=0;i<10;i++) for(j=0;j<10;j++) printf("a[%d][%d] = %d \n",i,j,*(p+i)); getch(); } int a[4][4],b4[3][3],b1[3][3],b2[3][3],b3[3][3],n,c1,c2,c3,c4,i,j; printf("\nIntroduceti elementele Matricei cu 4 linii si 4 coloane: \n"); int *mat; n=4; for (i=0; i<n; i++){ for … |
 | So am doing a run down of different 3DMath Libraries. I am noticing functions with return types are HORRIBLY inefficient compared to void returns. I decided to do a rundown of how move constructor/assignment effects this. Well having a move constructor is seeing an average of 3.5-4x improvement, but doing … |
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