How to remove repeating characters in a character array?
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For example, I have a 4 x 2 char array, moviecountry. It looks like this, ['US'; 'FR'; 'US'; 'CA']. I would like to have another character array, states, that only stores the non-repeating elements of this array, so in this case, states = ['US'; 'FR'; 'CA']. I have the following code right now:
states = [];
for jj = 1:size(moviecountry,1)
currentcountry = moviecountry(jj,:); %set temp country and compare with other
if jj == 1
states = [currentcountry];
end
for kk = 1:size(states,1)
if ~ismember(currentcountry, states(kk, :))
states = [states;currentcountry]%only add to output if no repetition
end
end
end
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Adam Danz
2021-11-29
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5 个评论
Rui Xu
2021-11-29
Adam Danz
2021-11-29
cellstr() or string()
Glad I could help.
" I tried unique at first and thought it didn't work for char arrays."
It does.
"Had to convert it to a cell."
Converting to cell is not required:
M = ['US'; 'FR'; 'US'; 'CA']
unique(M,'rows','stable')
Adam Danz
2021-11-29
Note Stephen's use of column vectors. If M is a row vector you won't be able to use this method.
Stephen23
2021-11-29
@Adam Danz: I just copied the char array verbatim from the question: "I have a 4 x 2 char array, moviecountry. It looks like this, ['US'; 'FR'; 'US'; 'CA']."
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