symmetrical character array with only letters

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Elena
Elena 2022-2-20
编辑： DGM 2022-2-22
Im trying to make a function that gives a logical true if the character array is symmetrical and logical false if not.
So far I have:
a = 'abba'
isItSym = isequal(a(:),flip(a(:)))
res = isItSym
But for anything that is not A-Z or a-z it needs to come back as logical false and it does not (ex: 'p##p').
Im thinking some sort of if function with an sprintf to split the array up and then find any false values with char(0:64) and so on. Im a little new with matlab tho so im having trouble goin about this. Thanks!

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Voss
Voss 2022-2-20
编辑：Voss 2022-2-20
Ran in:
Use isstrprop():
a = 'abba';
isItSym = isequal(a(:),flip(a(:))) && all(isstrprop(a(:),'alpha'))
isItSym = logical
1
a = 'p##p';
isItSym = isequal(a(:),flip(a(:))) && all(isstrprop(a(:),'alpha'))
isItSym = logical
0
  5 个评论
显示 3更早的评论
Elena
Elena 2022-2-22
is was thinking
if myStr == '';
res = 0
else res = isItSym
but it doesnt seem to be working?
DGM
DGM 2022-2-22
编辑：DGM 2022-2-22
Ran in:
a = 'abba';
isItSym = ~isempty(a) && isequal(a(:),flip(a(:))) && all(isstrprop(a(:),'alpha'))
isItSym = logical
1
a = 'abbc';
isItSym = ~isempty(a) && isequal(a(:),flip(a(:))) && all(isstrprop(a(:),'alpha'))
isItSym = logical
0
a = 'a##a';
isItSym = ~isempty(a) && isequal(a(:),flip(a(:))) && all(isstrprop(a(:),'alpha'))
isItSym = logical
0
a = '';
isItSym = ~isempty(a) && isequal(a(:),flip(a(:))) && all(isstrprop(a(:),'alpha'))
isItSym = logical
0

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