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Rupeng Li
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Question
Why indexing vs not indexing the 2D matrix will lead to different result?
I encounted an indexing problem: I have a 2x2 Cholesky factor and I want to recover the original SPD matrix. load s.mat s(:,:...
presque 3 ans il y a | 2 réponses | 0
2
réponsesQuestion
vertically concatenate struct values from the same field
Hi I encountered an issue in vertically concatenation of struct values from the same field. e.g. given S1 [S1(1:10).vals] = dea...
presque 4 ans il y a | 1 réponse | 0
1
réponseA résolu
Number of Even Elements in Fibonacci Sequence
Find how many even Fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...
plus de 5 ans il y a
A résolu
Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples n=2, A=[1 2 3] -> [1 1 2 2 3 3] ...
plus de 5 ans il y a
A résolu
Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...
plus de 5 ans il y a
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Find the largest value in the 3D matrix
Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...
plus de 5 ans il y a
A résolu
Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...
plus de 5 ans il y a
Question
How can I merge many rows of different lengths into a matrix?
Hi everyone! I encountered a problem in merging many rows of different lengths into a matrix, for example, A=[1:2]; B=[3:7];...
plus de 5 ans il y a | 2 réponses | 0
2
réponsesA résolu
Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...
plus de 5 ans il y a