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Need help writing regular expression


Need help writing regular expression

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Need help writing regular expression
Tag : chash , By : John
Date : November 20 2020, 03:01 PM

I hope this helps you . With this regex you will have to trim a trailing space from the results:
(([0-9A-E][0-9A-F]|[0-9A-F][0-9A-E])\s?)+
((
  [0-9A-E][0-9A-F]      A hex digit excluding "F", followed by a hex digit
  |                     or
  [0-9A-F][0-9A-E]      A hex digit, followed by a hex digit excluding "F"
 )
 \s?                    an optional space
)+                      The whole pattern repeated at least once
string pattern = @"(([0-9A-E][0-9A-F]|[0-9A-F][0-9A-E])\s?)+";
var matches = Regex.Matches(input, pattern);
foreach (var match in matches) {
    Console.WriteLine(match.Value.TrimEnd());
}
string pattern = "[0-9A-E][0-9A-F]|[0-9A-F][0-9A-E]";
var matches = Regex.Matches(input, pattern);
foreach (var match in matches) {
    Console.WriteLine(match.Value);
}

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Writing regular expression


Tag : java , By : user158220
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Do the brackets belong to the expression? Can you give an example, please.
Maybe the following regex works already:
"F_[ES]_[A-Za-z0-9]+_[A-Za-z0-9]+"
Pattern pattern = Pattern.compile("F_[ES]_[A-Za-z0-9]+_[A-Za-z0-9]+");
Matcher matcher = pattern.matcher(myStringToMatch);
if (matcher.matches())
{
  // Yeah, Baby!
}

Url re-writing regular expression


Tag : asp.net , By : Killercode
Date : March 29 2020, 07:55 AM
help you fix your problem no idea about Asp.net, but the regexp was tested with grep. you could try in your .net box:
kent$  cat a
fr-ca
fr-ca/
fr-ca/625
fr-ca/gd
fr-ca43/
1234
1234/
1234/g
1234g
1g34
kent$  grep -P "(^fr-ca$|^\d+$|^(fr-ca|\d+)/(\w|\d*)$)" a
fr-ca
fr-ca/
fr-ca/625
1234
1234/
1234/g
^fr-ca$
or ^\d+$
or ^(fr-ca|\d+)/(\w|\d*)$

the above line can be broken down as well
  ^(fr-ca|\d+)/(\w|\d*)$ :

starting with fr-ca or \d+
then comes "/"
after "/" we expect \w or \d*
then $(end)

Writing a Regular Expression


Tag : regex , By : ArmHead
Date : March 29 2020, 07:55 AM
Hope that helps I am trying to write one regular express to search for a phone number similar to 011 (134) 1234567892. , This one should work:
(011 \(13[124678]\) \d{10})

Is there a more sensible way of writing this regular expression?


Tag : python , By : dlouzan
Date : March 29 2020, 07:55 AM
should help you out One way to re-write the regexp to enhance readability (to reduce the chance to count consecutive whitespaces):
^( {4})*#(\s.*\S)?$

Need help for writing regular expression


Tag : java , By : user185949
Date : March 29 2020, 07:55 AM
may help you . You can use a repeated group to validate it's a comma separated string.
^[AER](?:,[AER])*$
^([AER])(?:,(?!\1)([AER])(?!.*\2))*$
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