Searching word list for key letters
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user86753
il 24 Gen 2022
Commentato: Walter Roberson
il 24 Gen 2022
wordList = {'apples'
'orange'
'banana'};
ContainList = 'shu';
NotContainList = 'br';
I'd like to be able to find all words that contain the letters S,H or U and do not have the letters B or R. I'm using 'contains' for each letter but is there a way to loop through the ContainList/NotContainList for each word?
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Walter Roberson
il 24 Gen 2022
Modificato: Walter Roberson
il 24 Gen 2022
wordList = {'apples'
'orange'
'banana'};
ContainList = 'shu';
NotContainList = 'br';
mask1 = contains(wordList, num2cell(ContainList))
mask2 = contains(wordList, num2cell(NotContainList))
filtered_words = wordList(mask1 & ~mask2)
%another approach
mask3 = ~cellfun(@isempty, regexp(wordList, "[" + ContainList + "]"))
mask4 = ~cellfun(@isempty, regexp(wordList, "[" + NotContainList + "]"))
filtered_words2 = wordList(mask3 & ~mask4)
%another approach
pattern = "^[^" + NotContainList + ContainList + "]*[" + ContainList + "][^" + NotContainList + "]*$"
mask5 = ~cellfun(@isempty, regexp(wordList, pattern))
filtered_words3 = wordList(mask5)
1 Commento
Walter Roberson
il 24 Gen 2022
In some cases you might want to work iteratively
wordList = {'apples'
'orange'
'banana'};
ContainList = 'shu';
NotContainList = 'br';
words_containing = wordList(contains(wordList, num2cell(ContainList)));
filtered_words = words_containing(~contains(wordList, num2cell(NotContainList)));
In situations where you are doing stepwise refinement, it is most efficient to start from the steps that are expected to make the most difference, each step discarding as much as practical, so that each step is searching less and less information.
Più risposte (1)
David Hill
il 24 Gen 2022
wordList = {'apples','orange','banana','show','unit'};
ContainList = 'shu';
NotContainList = 'br';
r=wordList(contains(wordList,num2cell(ContainList))&~contains(wordList,num2cell(NotContainList)));
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