how can I modify a triple "for" cycle to run faster?
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I have the following code, where I fill a 3D matrix with data from a struct, which has tables inside. The goal is to concatenate several 3D matrix. However, they have dfferent number of columns, so I don't think I can concatenate them all directly and skip the code below. The code below is taking me really a long time to compute, like days. My question is: how can I modify my code to make it run faster? I know I can preallocate B as B=zeros(50,10000,30), but I would like to know if there any other options. Thank you.