how do I compare columns in a string matrix

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ilona
ilona el 23 de Nov. de 2013
Comentada: ilona el 23 de Nov. de 2013
I have a given string matrix and I need to check if the word can be read the same from the opposite direction (that it is to say if it is a Palindromes like -live not on evil)
%
wordList = ['civic';'dream';'kayak';'level';...
'lower';'peace';'radar';'refer';'table';'stats']
if the word is read the same from both direction I have to put 1 in the vector palRes(10,1) if not - I have to put 0 in it...
what I have done:
%
wordList = ['civic';'dream';'kayak';'level';...
'lower';'peace';'radar';'refer';'table';'stats']
wordList1 = fliplr(wordList)
palRes=zeros(10,1)
for ii= 1:size(wordList,1)
for jj = 1:size(wordList,2)
if wordList(ii)== wordList1(ii)
palRes(ii,jj) = 1
end
end
end
but the problem is that the final palRes that I get is a(10,5)matrix instead of (10,1) vec I want to fix this problem inside the loop and not after it! any ideas? thanks!

Respuesta aceptada

Roger Stafford
Roger Stafford el 23 de Nov. de 2013
Instead of that inner for-loop with the index jj, use the 'all' function:
palRes(ii) = all(wordList(ii)==fliplr(wordList(ii));
  3 comentarios
Roger Stafford
Roger Stafford el 23 de Nov. de 2013
You can read about it in detail at:
http://www.mathworks.com/help/matlab/ref/all.html
In your case it is true if each logical element in its vector argument is true.
I have assumed here that wordList(ii) is a vector of string characters. Perhaps it should be written as wordList(ii,:).
ilona
ilona el 23 de Nov. de 2013
I did as you told but still got it wrong
what I did:
% code
wordList = ['civic';'dream';'kayak';'level';...
'lower';'peace';'radar';'refer';'table';'stats']
wordList1 = fliplr(wordList)
palRes=zeros(10,1)
for ii= 1:size(wordList,1)
if all(wordList(ii)==fliplr(wordList(ii)));
palRes(ii) = 1
end
end
doing this
palRes =
1
1
1
1
1
1
1
1
1
1
which is a wrong answer!!!
what have I done wrong :( ?

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