Inserting zeros into another array at values in the second array

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mark palmer
mark palmer 2023-11-24
回答： Image Analyst 2023-11-24
Hi, Lets have the following arrays:
A = [8 2 3 5 5 6 7 8 9];
B = [1 3 2 3]
Now, I want to write a code which can insert zeros into A after every location in B. So, my final output would be
F = [8 0 2 3 5 0 5 6 0 7 8 9 0]
Please let me know, what is the most efficient way of coding to implement this?
Thanks

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回答（2 个）

Matt J
Matt J 2023-11-24
编辑：Matt J 2023-11-24
Ran in:
A = [8 2 3 5 5 6 7 8 9];
B = [1 3 2 3];
F=nan(1,numel(A)+numel(B));
F(cumsum(B)+(1:numel(B)) )=0;
F(isnan(F))=A
F = 1×13
8 0 2 3 5 0 5 6 0 7 8 9 0
Image Analyst
Image Analyst 2023-11-24
This looks like a homework problem. If you have any questions ask your instructor or read the link below to get started:
How do I get help on homework questions on MATLAB Answers? - MATLAB Answers - MATLAB Central
Obviously we can't give you the full solution because you're not allowed to turn in our code as your own.
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