How do I print the common elements in a row vector?

If I have two-row vectors,

A = [3, 11, 7]
B = [11, 2, 5]

and I have to find the common element, how do I do that?

    C = ismember(A, B)

But, using the ismember() function will only give me values in 0 or 1. I want to print out '11', but how do I accomplish that? Do i use the function unique()? any help would be very much appreciated.thank u.

Answer 1

[David Fletcher]

use the logical vector to index the common values

common=A(ismember(A,B))

if you have multiple values in A that are the same you will get

A = [3, 11, 7 11 3]
B = [11, 2, 5]

common=A(ismember(A,B)))

common =

    11    11

You can use unique to filter the list

common=unique(A(ismember(A,B)))

common =

    11

Answer 2

[Stephen23]

The simplest solution is to use intersect:

>> intersect(A,B)
ans = 11