Find intervals in a vector

Lets suppose we have the vector A=[0 5 7 8 0 0 0 1 9 6 0 0 1 2]. The goal is to extract the indices of the different intervals inside the vector A and write it in seperate vectors. With intervals I mean the nonzero numbers. So at the end of the code I want the vectors B=(2 3 4) C=(8 9 10) D=(13 14), where the entries are the indices of the intervals (consecutive nonzero numbers) in A.

Is there a possibility to accomplish this task in a general way ?

Thanks

Answer 1

[David Hill]

a=find(A~=0);
b=[0,find(diff(a)>1),length(a)];
for k=2:length(b)
    c{k-1}=a(b(k-1)+1):a(b(k));
end