How to process this string via regular expression

Posted by iiduce on Stack Overflow See other posts from Stack Overflow or by iiduce
Published on 2010-04-07T10:09:18Z Indexed on 2010/04/07 10:13 UTC
Read the original article Hit count: 296

Filed under:

string-manipulation

|

regex

my string style like this:

expression1/field1+expression2*expression3+expression4/field2*expression5*expression6/field3

a real style mybe like this:

computer/(100)+web*mail+explorer/(200)*bbs*solution/(300)

"+" and "*" represent operator "computer","web"...represent expression (100),(200) represent field num . field num may not exist.

I want process the string to this:

/(100)+web*+explorer/(200)bbs/(300)

rules like this:

if expression length is more than 3 and its field is not (200), then add brackets to it.

© Stack Overflow or respective owner

Related posts about string-manipulation

String manipulation in C#

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following text, I need to extract the exception name and the continuing sentence from the file, but the file has continuous sentences without a space. ??????>????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ??????????… >>> More
Regarding String manipulation

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a String str which can have list of values like below. I want the first letter in the string to be uppercase and if underscore appears in the string then i need to remove it and need to make the letter after it as upper case. The rest all letter i want it to be lower case. "" "abc" "abc_def" "Abc_def_Ghi12_abd" "abc__de" "_" Output: "" "Abc" "AbcDef" "AbcDefGhi12Abd" "AbcDe" "… >>> More
String manipulation in C# ( Brainstroming ;-) )

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following text , i need to extract the exception name and the continuing sentence from the file... but the file has continues sentence without a space. ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????… >>> More
php string-manipulation (clear the "_" and the timestamp)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi! I cant find the way how to strip the useless section of my string (read from SQL) I've tried the strreplace and truncate but those was not good at all. I've got a string variable called $stuff if $stuff = 145_timestamp i want to clear the _ and the chars after it. so i want to $stuff be 145… >>> More
c# string manipulation

as seen on Stack Overflow - Search for 'Stack Overflow'
i have string of 9 letters. string myString = "123987898"; I want to retrieve frist 3 letter "123" then 2 more leters "98" and then 4 more letters "7898". Which c# string function support this functionality. >>> More

Related posts about regex

Find multiple regex in each line and skip result if one of the regex doesn't match

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a list of variables: variables = ['VariableA', 'VariableB','VariableC'] which I'm going to search for, line by line ifile = open("temp.txt",'r') d = {} match = zeros(len(variables)) for line in ifile: emptyCells=0 for i in range(len(variables)): regex = r'('+variables[i]+r')[:|=|\(](-… >>> More
OWASP Regex Repository: Is this regex correct?

as seen on Stack Overflow - Search for 'Stack Overflow'
I was looking at the regular expression for validating various data types from the (OWASP Regex Repository). One of the regular expressions in there is called safetext and looks like: ^[a-zA-Z0-9\s.\-]+$ My first question is: Is this regular expression correct? complementary question If this… >>> More
Make a Perl-style regex interpreter behave like a basic or extended regex interpreter

as seen on Stack Overflow - Search for 'Stack Overflow'
I am writing a tool to help students learn regular expressions. I will probably be writing it in Java. The idea is this: the student types in a regular expression and the tool shows which parts of a text will get matched by the regex. Simple enough. But I want to support several different regex… >>> More
JS regex isn't matching, even thought it works with a regex tester

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm writing a piece of client-side javascript code that takes a function and finds the derivative of it, however, the regex that's supposed to match with the power rule fails to work in the context of the javascript program, even though it sucessfully matches when it's used with an independent regex… >>> More
c# RegEx with "|"

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to be able to check for a pattern with | in them. For example an expression like d*|*t should return true for a string like "dtest|test". I'm no regex hero so I just tried a couple of things, like: Regex Pattern = new Regex("s*\|*d"); //unable to build because of single backslash Regex Pattern… >>> More