MATLAB: Help with displaying the vowels

Question

Hi, I want to make my code to be converted to switch and case statements and have the desired output from the picture:

function [vowels] = locateVowels( charactercell )
isvowel=@(s) ismember(lower(s),'aeiou');
isvowel=@(s) ismember(lower(s),'aeiou');
idxV=cellfun(isvowel,charactercell,'unif',0);
vowels=cellfun(@(s,i) lower(s(i)),charactercell,idxV,'unif',0);
end

Answer 1

Hint:

x(ismember(x, y))

However, it is tricky to determine what the vowels are in English. See https://www.mathworks.com/matlabcentral/answers/326767-finding-vowels-in-a-string-the-user-inputs-and-printing-the-vowels-here-s-the-problem#answer_256208