How to quickly find the indecies of elements in an array?

Dear All,

I have an array A which contains integers. I have another array B. I want to find out the indecis of B in A.

For example, A = [1 9 2 8 3 7 4 6 5], B = [5 6 7]. The indecis of B in A is [9 8 6].

Thanks.

Benson

Answer 1

[per isakson]

A = [1 9 2 8 3 7 4 6 5];
B = [5 6 7];
[~,ix] = ismember( B, A )

ix = 1×3

9 8 6

Answer 2

[Torsten]

indices = find(A==B)

[Benson Gou]

Hi, Torsten,

I got an error message: Matrix dimensions must agree.

Thanks.

Benson

[Torsten]

Ok, seems a loop is required to find the indices for more than one element using the "find" command.