Unique value for each sequence of two corresponding variables

Hi,

I want to find the unique values for a sequence in A and the value corresponding value in B. For example:

A = [ 1 1 1 2 2 1 1 1 3 3 2 2 2 3 3 3]

B = [ 7 7 7 9 9 7 7 7 7 7 9 9 9 7 7 7]

output

Aa= [1 2 3]

Bb = [7 9 7]

How can I achieve this?

Answer 1

[Jan]

A = [ 1 1 1 2 2 1 1 1 3 3 2 2 2 3 3 3];
B = [ 7 7 7 9 9 7 7 7 7 7 9 9 9 7 7 7];

[Aa, iA] = unique(A, 'first');
Bb = B(iA);

Aa

Aa = 1×3

1 2 3

Bb

Bb = 1×3

7 9 7

Answer 2

[Ariane Moura]

It works for my problem!!! Many thanks!!!