Your algorithm has a problem. You rely on the fact that there is atmost one possible direction from any cell and that that path can never be circular. In case of a binary matrix that conditions are bound to fail. You move from (0,0) to (1,0) to (0,0) to (1,0) to (0,0) to (1,0) to … Read more
Define an nxn matrix A by a(i,j)=-1+2max(i,j) and b(j)=sum(j to n) a(i,j). Then test Naive-Gauss on this system (Matlab) solved Define an nxn matrix A by a(i,j)=-1+2max(i,j) and b(j)=sum(j to n) a(i,j). Then test Naive-Gauss on this system (Matlab)
I don’t know exactly what data structure you get the wall in, but assuming it is: std::vector<std::vector<char>> wall; To be able to perform melting using std::sort, it is best to have columns in the outer vector and rows in the inner vectors. // melting bricks for (int col = 0; col < wall.size(); ++col) //column … Read more
Sounds like you just need a countifs formula, so the yellow cell would have: =COUNTIFS($B$2:$B$10001,”AAA”,$C$2:$C$10001, “AA”) 4 solved Calculate a Generator Matrix with VBA [closed]
You should just Google this stuff. There were plenty of answers out there. But all you have to do is check if (a,b) is the same as (b,a). public static boolean isSymetric(int[][] array){ for(int a = 0; a < array.length; a++){ for(int b = 0; b < array.length; b++){ if(array[a][b]!=array[b][a]){ return false; } } } … Read more
You could use cbind function: C <- cbind(A, B[,2]) 1 solved how to combine desired columns from different matrix in R
algorithm for finding the number of 1s in a matrix (only vertical 1s). The image is self explanatory that what i exactly want solved algorithm for finding the number of 1s in a matrix (only vertical 1s). The image is self explanatory that what i exactly want
There are multiple issues with your program. Let me list all of them one by one. As mentioned in one of the comments, You are immediately deallocating memory just after you allocated it. Definitely this will result in a segmentation fault or memory access violation when you access deallocated memory. When you allocate the memory … Read more
You have to: read first line split it to get dimensions read next lines (regards dimensions) read special char (@) repeat Reading first array you have there: static void readFile() throws IOException { BufferedReader reader; reader = new BufferedReader(new FileReader(“file.txt”)); String firstDimension = reader.readLine(); String[] split = firstDimension.split(” “); int firstX = Integer.parseInt(split[0]); int firstY … Read more
int main() { int random[3][3]; int i, o; srand(time(NULL)); for(o = 0; o<3; o++) for(i = 0; i<3; i++) random[o][i] = rand(); return 0; } That’ll do it. If you want a particular subset of data you can use the % operator on the output from rand(), for example: rand() % 10; // generates a … Read more
There are several ways to do this. But since the size of the array is always 6×7, you can actually create a kind of template array as an array literal, which starts with 0. Then the rest is a piece of cake: just add the argument to all the values: function snakeArray(start) { return [ … Read more
I tried to reproduce the error. The error I got is: TypeError: must be real number, not list If the error is same then it was solved by doing this: thisJ = temp7 * math.exp(temp6[0][0]) Because temp6 type is list containing list containing array object. Please do correct me if I am wrong. 0 solved … Read more
I’m a bit lost on the question, but this line vec <- 1:3 embed(c(rep(0,length(vec)),vec),length(vec)+1) …produces the last part of your desired result: [,1] [,2] [,3] [,4] [1,] 1 0 0 0 [2,] 2 1 0 0 [3,] 3 2 1 0 Which you can then bind to the first number of the vector. cbind(vec[1],embed(c(rep(0,length(vec)),vec),length(vec)+1)) to … Read more
Try using Boost.MultiArray. It allows you to create multidimensional arrays with contents of arbitrary content type. I have used it (the boost::multi_array_ref part to be more specific) and it works pretty nice. An important feature is the ability to create array views (and slices based on views). solved Passing map (matrix) to class C++ [closed]
[A,B] = size(v) for ii = 1:B v(:,ii) = v(:,ii)./abs(min(v(:,ii))); end In case this is the exact example you have. And just in case doubles are not good enough: v = int32(v); % or whichever integer you want bsxfun way, thanks to @rayryeng: v = bsxfun(@rdivide, v, abs(min(v,1))); 4 solved How to convert decimals in … Read more