replacing text in a string using indexing
17 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
how could replace text by just using one line of code
e.g. a = 'qqqqqq' and I want to make q = 'qweqwe'
0 comentarios
Respuestas (2)
Mathieu NOE
el 21 de Sept. de 2022
I win the prize !
out = strrep('qqqqqq','qqqqq','qwe')
out =
'qweqwe'
2 comentarios
Mathieu NOE
el 21 de Sept. de 2022
look at the doc for function strrep
strrep Find and replace substring.
MODIFIEDTEXT = strrep(ORIGTEXT,OLDSUBTEXT,NEWSUBTEXT) replaces all
occurrences of the text OLDSUBTEXT within text ORIGTEXT with the
text NEWSUBTEXT.
the trick here is to count how many times you want the pattern 'qwe' repeated in the output (modified) text
you last query request 3 time 'qwe' to make 'qweqweqweq' so we will take the input text ('qqqqqqqqqq') and remove 3 - 1 = 2 'q' from this character to create the subtext
here a liitle demo where I remove 0,1,2 times the q
out1 = strrep('qqqqqqqqqq' ,'qqqqqqqqqq' ,'qwe') % zero 'q' removed in subtext (compared to input text)
out2 = strrep('qqqqqqqqqq' ,'qqqqqqqqq' ,'qwe') % one 'q' removed in subtext
out3 = strrep('qqqqqqqqqq' ,'qqqqqqqq' ,'qwe') % two 'q' removed in subtext
out1 = 'qwe'
out2 = 'qweqwe'
out3 = 'qweqweqwe'
Ver también
Categorías
Más información sobre Characters and Strings en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!