167 Topics
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| | 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){ … |
 | 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.  |
| | 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 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; … |
| | 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 … |
| | 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 … |
| | 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. |
| | 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 … |
| | 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 … |
| | How to add two sparse matrices stored in 2d arrays?? |
| | Hola code gurus, I’m wondering if there’s a way to use a string to access a specific item in a matrix of int[X]. I have a program which uses enums as iterators to reference a large amount of data. To select an item in the matrix, the user will enter … |
| | Hey guys! I have an encryption project for school and i have to randomly generate a 3x3 matrix. I know how to assign the values to the 2d array but i am unsure how to return the array. I know it is possible to return a vector of a vector … |
| | /***** The prompt i have is : use a class with 3 member functions named InputMatrix, Calculate, and OutMatrix. The program will prompt the user to (e)enter the matrix data, (c) to calculate the matrix multiplication, (d) to display the input and output matrices, and (q) to quit. no exit() …  |
 | hi Am trying to write a C-code that multiply two matrices but i want the elemnets of every matrix is random number using time function main() { srand ( time(NULL) ); int m1[10][10]; m1[10][10] = rand() % 10; scanf("%d%d",&r1,&c1); scanf("%d%d",&r2,&c2); if(r2==c1) { . . . . } this is the …  |
| | This is my matrix. I want to solve C,D and E <uploaded> Can anyone give me the sample codes to solve C, D and E in VB.Net? Answers are C=0.4857143, D=0.0000000 and E=-0.1428571 (manual calculation) Thanks! |
| | [CODE] // a code to produce matrix style affect #include "stdafx.h" #include<iostream> using namespace std; int modulus(int Number, int number); char getchar(int lowerlimit, char a, int upperlimit); int modulus(int Number, int number) { int q=Number/number; return Number-(q*number); } char getchar(int lowerlimit, char a, int upperlimit) { return (a+modulus(lowerlimit,upperlimit)); } int … |
| | [CODE] // a code to produce matrix style affect #include "stdafx.h" #include<iostream> using namespace std; int modulus(int Number, int number); char getchar(int lowerlimit, char a, int upperlimit); int modulus(int Number, int number) { int q=Number/number; return Number-(q*number); } char getchar(int lowerlimit, char a, int upperlimit) { return (a+modulus(lowerlimit,upperlimit)); } int … |
| | So I have a matrix class that must run on a unix/linux server. The main is a test file that is provided by the instructor. When I compile my code in visual studio it works fine except for test 8 because I can't figure out how to return a print … |
| | the top most left (corner) is the starting point. then it will travel. the gray areas are the traveled areas. In this 2 dimensional array how will i measure the diagonality of these traveled paths? |
| | hi guys, I have been using python since last 1yr. For my work I have to use large data that are at least of size 3000 to 30000 or even more quite a time. Since many months I have been using matrices. But when the size of the Matrix is … |
| | Is there something wrong with this code i wrote? i get the feeling i made a mistake and cant quite recall what, its quite frustrating. The function is supposed to determine the dimensions of a matrix and if it is, or is not, a valid matrix ( for example, if … |
 | Here i have a working code, what i want to know is: When the user inputs elements to the array, i want it to be automatically aligned in form of an matrix. Instead of [ICODE] 1 2 3 4 5 6 etc....[/ICODE] But just as a matrix, like this [ICODE] … |
| | Matrix given in memory; the objective is to print the spiral in opposite direction from clockwise (left column down the right lower range, right up column, a series of upper left, etc. until you get to the environment). This works just for dimension 3x3. It should works for MxN dimension, … |
| | I have question about if my input matrix was | 1 2 3 4 | | 2 3 4 5 | | 3 4 5 6 | how I would get an output matrix | 0 0 0 0 0 0 | | 0 1 2 3 4 0 | … |
| | I made a code in assembly 8086. I load matrix (array) in memory with dimension 3x3. but this code works just for this dimension of matrix 3x3. Could someone give me an idea how could i make it to work with dimension m x n? the array is loaded in … |
 | Hello, I have a file and this how it looks like: 6 {a, b, c, d, e, f} 1 1 1 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 1 1 1 0 1 1 … |
| | Matrix given in memory to print the spiral in opposite direction from clockwise (left column down the right lower range, right up column, a series of upper left, etc. until you get to the middle) This is matrix 1 2 3 8 9 4 7 6 5 and the result … |
| | I have a Graph that I'm making using an adjacency matrix to hold edge values. The noEdge value is zero and all edgeweights are positive integers. I have to delete a node from this graph and I'm having trouble figuring out how to update the Adjacency matrix after the deletion … |
| | Hello, I want to use Hamming Code to correct any BER's that I have streaming from a text file. The contents of my text file are as follows: 0 0 1 0 1 1 0 0 0 1 0 1 1 1 1 1 1 0 0 0 0 1 … |
| | Hello people I have a 2 dimension array that contains only 0 and 1 values. I want to represent all the 0 elements in a tree: how can I do that ? Thank you for any help |
| | Write a program which for a square matrix to calculate the sum of the elements. Assume that the amount can be placed in 16-bit register Example: 1 [COLOR="Red"]1 1[/COLOR] 2 2 [COLOR="Red"]2[/COLOR] 3 3 3 Elements are: 1,1, 2, which are with red color. I had calculate sum of this …  |
| | Ey all. Im folowing a c++ course and im stuck writing string or char arrays to matrices. The problem is i have a matrix of size [i][j] with random values from 0 to 3. Each of these values have to correspond to either a string or char array. 0=EMPTY 1=RES … |
| | Hi everyone! In class we just learned about pointers and the their uses. We have been given a project where we need to allocate dynamic memory for any number of matrices (up to four). All four of the matrices addresses are stored in a matrix poiner. All of this must … |
| | [COLOR="gray"][/COLOR]1. your-netid_hw5_1.java : Liang page 253, programming exercise 7.6. (Multiplying two matrices) Write a method to multiply two matrices. The header of the method is as follows: public static double[][] multiplyMatrix(double[][] a, double[][] b) To multiply matrix a by matrix b, the number of columns in a must be the …  |
| | I'm trying to store these arrays into the matrix [CODE]double X[5][3][/CODE] so I could classify them with 1 Nearest Neighbour: [CODE=C]double brick_v[3]={ent_brick,en_brick,con_brick}; double metal_v[3]={ent_metal,en_metal,con_metal}; double skin_v[3]={ent_skin,en_skin,con_skin}; double wood_v[3]={ent_wood,en_wood,con_wood}; double grass_v[3]={ent_grass,en_grass,con_grass};[/CODE] I would be very grateful if someone would show me how you can do this in C++.  |
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