How do you use randperm on a vector?

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lauuser1
lauuser1 2016-2-14
评论： Guillaume 2016-2-14
I have a vector
A = repmat(1:6, [1 4])
and I need to use randperm to randomize it. How would I do that?

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Kristi
Kristi 2016-2-14
A = repmat(1:6, [1 4])
B = A(randperm(24))
  1 个评论
Guillaume
Guillaume 2016-2-14
B = A(randperm(numel(A))
would be a lot better since it will work regardless of the size of A. As a rule avoid hardcoded constants, particularly as it's trivial to obtain the number of elements in A.

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