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

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Benson Gou
Benson Gou on 23 May 2021
Commented: Torsten on 23 May 2021
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

Accepted Answer

per isakson
per isakson on 23 May 2021
Edited: per isakson on 23 May 2021
A = [1 9 2 8 3 7 4 6 5];
B = [5 6 7];
[~,ix] = ismember( B, A )
ix = 1×3
9 8 6

More Answers (1)

Torsten
Torsten on 23 May 2021
indices = find(A==B)
  2 Comments
Torsten
Torsten on 23 May 2021
Ok, seems a loop is required to find the indices for more than one element using the "find" command.

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