compare arrays

I have two arrays. I want to compare array A with B to see which element is in A and not in B and vice versa. Please help

Answer 1

[bym]

unique(A,B)

[Walter Roberson]

That would only work if B just happened to be the character vector 'rows' ...

Answer 2

[Walter Roberson]

setdiff(A,B)

and

setdiff(B,A)