Create a random sequence with specified elements

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luca
luca 2019-8-2
回答： madhan ravi 2019-8-2
Hi
Given the following vector
Q= [25 30 35 30 40 20 25 30]
I want to create a random vector S that contain the
Element 1, 25 times
Element 2, 30 times
Element 3, 35 times
Element 4, 30 times
Element 5, 40 times
Element 6, 20 times
Element 7, 25 times
Element 8, 30 times
such as
S= [1 8 3 4 5 6 7 8 1 2 3 5 7 4 2 2 5 7 ...]
The creation of S should be random. but the number of times an element is repetead should respect the quantity indicated in Q.

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采纳的回答

madhan ravi
madhan ravi 2019-8-2
s = repelem(1:numel(Q),Q);
S = s(randperm(numel(s)))

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