Argument on 2 vectors without using for loop
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I have 2 vectors
A=[10 22 31 14 55 16 47 18];
B= [1 2 1 1 1 2 1 2];
I want to make a third vector C which contains values of A for values of B=1; like
C=[10 NaN 31 14 55 NaN 47 NaN]
or
C=[10 31 14 55 47]
I did this using a for loop. Just want to know if this is doable without using for loop as it may save a lot of computation time. (The vectors with me are really really large
for i=1:length (A);
if B(i)==1;
C(i)=A(i)
else C(i)=NaN;
end;
end;
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