Find elements in one array not in another

I have

 a=1 3 5 6
 b=2 4 3 7

I need to find first_set=1 5 6 second_set=2 4 7

I tried

 p=ismember(a,b);
 first_set=a(~p)
 q=ismember(b,a);
 second_set=b(~q)

is there an easier way to do this?

[Image Analyst]

Be sure to read and understand the FAQ if you're working with single or double class numbers. http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F Depending on how you get the numbers, they may not be equal even though you think they should be.

Answer 1

[Thomas]

try setdiff

 doc setdiff

% in above case

 first_Set=setdiff(a,b)
 second_set=setdiff(b,a)