search pattern without using built -in function
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
how to search pattern without using regexp or strcmp function.... that is if i have a word "mississippi" the string "issi" "ssi" "ss"..... occurs two times.... how to write it in code without using built-in function..... how to search whether a particular pattern is in the word and its occurance without using built-in function...... please do reply.....
1 Kommentar
Akzeptierte Antwort
Weitere Antworten (1)
Jan
am 5 Apr. 2013
Sorry, without built-in functions you cannot perform any useful operations in Matlab. Even the assignment using the "=" operator is a built-in function.
6 Kommentare
Cedric
am 6 Apr. 2013
Bearbeitet: Cedric
am 6 Apr. 2013
The way you are using REGEXP makes it return an array of starting positions of the pattern in the array of characters that you are passing as a first argument.
You seem to have defined BWM as a rectangular array of characters, why? As Jan mention, should we understand that you have to find vertical occurrences or should we read BWM horizontally as if it were one long string? If such case, you could redefine it as
BWM = BWM(:).' ;
in order to make it easier for us to understand that it is just one long string and to simplify further processing
Now let's admit that it is just one long string, could you exploit a FOR loop like the following for searching the pattern?
for k = 1 : length(BWM)-length(expression)+1
% do something
end
If you have to "highlight" matches by framing them with stars, you could for example build a second BWM while you read the first, which would include the stars (might be easier than try to insert stars in the current version).
Siehe auch
Kategorien
Mehr zu String Parsing finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!