I am considering "or" part of the question "how get same elements in 2 arrays?"
Use Intersection between two array, see detail here
See the following example, where A and B are two arrays having any lengths
>> A=1:10;
>> B=[2 3 4 5 200 100 101];
>> result=intersect(A,B)
Command Window:
result =
2 3 4 5
Hope it Helps!
