Find index of cell values in another cell array without a loop

Hi all,

I have 2 cell arrays. Cell array B is always smaller than A and its values are always contained in A.

I want to find the indexes of each value contained in B within A.

Here is what I have with a loop and it works.

A = {'Q' 'W' 'E' 'R' 'T' 'Y' 'U' 'I' 'O' 'P'};
B = {'W' 'R' 'O'};
for i=1:length(B)
    Index(i) = find(strcmpi(A,B(i)));
end

I want to remove the loop for efficiency purposes.

What would you suggest?

Thanks,

Answer 1

[Akira Agata]

It's time to use ismember function!

A = {'Q' 'W' 'E' 'R' 'T' 'Y' 'U' 'I' 'O' 'P'};
B = {'W' 'R' 'O'};

[~, index] = ismember(B, A)

index = 1×3

2 4 9

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[Vic]

Wonderful!

I knew it was something simple but I could not phrase my question properly on Google.

Thanks a lot