# Compute the complement of a set of indices in a known range

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I want to compute the complement of a set C. The elements are indices in the range 1 to K. Is the best/fastest/simplest way to go around this is using

C = setdiff(A,B)

or since I know they are not arbitrary sets of numbers, is there a better way to go around in MATLAB?

##### 2 Comments

Azzi Abdelmalek
on 4 Apr 2016

What do you mean? can you clarify what "not arbitrary sets of numbers" means, with a small example

### Answers (1)

Dave Behera
on 6 Apr 2016

##### 0 Comments

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