Turning a while loop into 1 line

2017 6 4
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更新时间：2017 6 5
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Hi, for an assignment, I have to turn this while loop into one line
v=[4 11 22 5 33 -8 3 99 52];
newv_sol=[];
j=1;
i=1;
while j<=length(v)
if v(j)<30
newv_sol(i)=v(j);
i=i+1;
end
j=j+1;
end
newv_sol
So far, I've only managed to make it in two lines with the find function and logical indexing.
x=find(v<30)
newv_sol=v(x)
Is there a way to combine these two?

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Bradley Farman
Bradley Farman 2017-6-4
Never mind, I seem to have figured it out.
newv_sol=v(find(v<30))
Stephen23
Stephen23 2017-6-4
编辑：Stephen23 2017-6-4
find is not required: logical indexing is more efficient:
newv_sol=v(v<30)

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2017-6-5

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