Regular expressions: dealing with spaces

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pietro
pietro 2016 年 5 月 3 日
編集済み: Stephen23 2021 年 4 月 21 日
Hi all,
I have different strings wich they differ from the number of spaces among words. I need to find a way to find this string pattern in a long string.
For example
TxT='f 2000 min';
TxT='f2000min';
TxT='f 2000 min';
At first, I came up with this,
regexp(Txt,'(f \d+ min)||(of\d+min)','match')
but it doesn't work for the last case for the number of spaces. Is there any way to not consider spaces into regular expressions or that a variable number of spaces inside the string might be in the strings?
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pietro
pietro 2016 年 5 月 3 日
Thank you so much.

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Stephen23
Stephen23 2016 年 5 月 3 日
編集済み: Stephen23 2021 年 4 月 21 日
You were almost there:
>> fmt = 'f *\d+ *min';
>> regexp('f 2000 min',fmt,'match')
ans =
f 2000 min
>> regexp('f2000min',fmt,'match')
ans =
f2000min
>> regexp('f 2000 min',fmt,'match')
ans =
f 2000 min
One of the best things about MATLAB is the great documentation. It means that you don't have to guess how MATLAB works, or ask random strangers on internet forums. The documentation is online, and searchable using your favorite internet search engine. And when I searched for ˇMATLAB regular expression", this is the first result:
It explains how to specify how many times characters or patterns should be matched.
  2 件のコメント
Jan
Jan 2017 年 10 月 25 日
編集済み: Jan 2021 年 4 月 21 日
I have removed the flag. Stephen's answer contains a solution and is polite. It is not ironic to suggest to use the documentation, but useful.

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