deleting words from a cell array

Question

James Connor 2015-11-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/254320-deleting-words-from-a-cell-array

编辑： Mohammad Abouali 2015-11-16

if I have a cell array

x={'areach';'aread';'areal';'areality';'arean';'arear';'areasoner';'areaway';'areca';'arecaceae'}
y='a'
word='areach'

How do I delete all the words from x that do not have y in the positions it appears in word

for example 'a' appears as the 1st and 4th letter of word, delete all words from dictionary that do not have 'a' as their 1st and 4th position letters. so x would become

x={'areach';'aread';'areal';'areality';'arean';'arear';'areasoner';'areaway'}

(it got rid of 'areca' and 'arecaceae)

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Answer 1

Mohammad Abouali 2015-11-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/254320-deleting-words-from-a-cell-array#answer_199425

编辑：Mohammad Abouali 2015-11-11

在 MATLAB Online 中打开

x={'areach';'aread';'areal'; ...
   'areality';'arean';'arear'; ...
   'areasoner';'areaway';'areca'; ...
   'arecaceae'};
y='a';
word='areach';
% This line does the trick;
x=x(cellfun(@(c) all(c(find(word==y))==y),x))
x = 
      'areach'
      'aread'
      'areal'
      'areality'
      'arean'
      'arear'
      'areasoner'
      'areaway'

Note that the position 1 and 4 are not hard coded. They are defined based on the y and word

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Mohammad Abouali 2015-11-16

编辑：Mohammad Abouali 2015-11-16

在 MATLAB Online 中打开

you can also use

x=x(cellfun(@(c) all(c(word==y)==y),x))

i.e. without using find().

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Answer 2

bio lim 2015-11-11

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/254320-deleting-words-from-a-cell-array#answer_199420

在 MATLAB Online 中打开

x={'areach';'aread';'areal';'areality';'arean';'arear';'areasoner';'areaway';'areca';'arecaceae'};
for n = 1 : length(x)
 if ~strcmp(x{n}(4),'a')
  x{n}=[];
 end
end