how to count number of states in sequence?

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Ram k
Ram k 2016-5-5
编辑： Azzi Abdelmalek 2016-5-5
Suppose I have a sequence 1,3,3,1,2,1,4,2,3,1,4,2,4,4,4,3,1,2,5,1 in this 5 states are there, so how to count that there are 5 states.

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Azzi Abdelmalek
Azzi Abdelmalek 2016-5-5
编辑：Azzi Abdelmalek 2016-5-5
a=[1,3,3,1,2,1,4,2,3,1,4,2,4,4,4,3,1,2,5,1]
out=unique(a)
number_of_states=numel(out)

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