How do I generate a vector of ordered integer

2015 11 21
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I want to generate a vector of the form [1 2 3 1 2 3 4 5 1 2 3 4 5 6 7 1 2 3 4 5 6 7 9] with simple matlab code.

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the cyclist
the cyclist 2015-11-21
编辑：the cyclist 2015-11-21

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One way:
x = [1 2 3 1 2 3 4 5 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9];
But I'm guessing that's not what you meant.
Another way:
x = [];
for k = 3:2:9
x = [x, 1:k]
end
In general, it is not a good idea to "grow" a vector like this, by simply appending. It's better to define the vector length ahead of time, preallocating the memory. But, I'm feeling lazy right now.

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