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

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Vic
Vic 2024-11-3，2:39
评论： Vic 2024-11-3，13:25
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,

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采纳的回答

Akira Agata
Akira Agata 2024-11-3，3:24
Ran in:
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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  1 个评论
Vic
Vic 2024-11-3，13:25
Wonderful!
I knew it was something simple but I could not phrase my question properly on Google.
Thanks a lot

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