How to repeat each elements of matrix irregularly

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Hello everyone, i have a matrix like:
A =
0.2978 -0.7649 -2.8475 3.4084
And i want to repeat the elements of matrix but differently for each element. For example, i want to repeat 0.2978 two times, -0.7649 three times, -2.8475 two times, and 3.4084 four times. So it will look like:
B =
0.2978 0.2978 -0.7649 -0.7649 -0.7649 -2.8475 -2.8475 3.4084 3.4084 3.4084 3.4084
What is the way to do that? Thank you.

Accepted Answer

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 27 May 2021
This is an easy solution to your exercise. You can adjust it w.r.t your exercise conditions:
A =[0.2978 -0.7649 -2.8475 3.4084];
for ii = 2:numel(A)
AA = [AA, repmat(A(ii-1), 1, ii)];
Good luck.

More Answers (1)

Image Analyst
Image Analyst on 27 May 2021
Use repelem():
A =[0.2978 -0.7649 -2.8475 3.4084]
B = repelem(A, [2 : length(A) + 1])
Jenjen Ahmad Zaeni
Jenjen Ahmad Zaeni on 28 May 2021
Haha yeah. So many improvement that make things easier. When i installed it, i have less memory of HDD so i installed the older release instead. Oh yes, my bad, i didn't look for it. Anyway, thank you very much.

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