How do you use randperm on a vector?

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lauuser1 2016-2-14

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评论： Guillaume 2016-2-14

采纳的回答： Kristi

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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 2016-2-14

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A = repmat(1:6, [1 4])
B = A(randperm(24))

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Guillaume 2016-2-14

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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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