regarding regular expression

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Dear All,

I want create/write a regular expression for exact match of 6.4 and 2.5 in following string: “abc 6.4 xyz 2.5”

Please help or share your thoughts.

Regards,
YRishi

Posted 9-Aug-12 3:47am

yrishi

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lewax00 · Answer 1 · 2012-08-09T04:19:00

Solution 3

.*\s(\d\.\d)\s.*\s(\d\.\d) Or, if the numbers can be longer (e.g. 12.34) .*\s(\d+\.\d+)\s.*\s(\d+\.\d+)

Posted 9-Aug-12 4:19am

lewax00

Comments

Kenneth Haugland 9-Aug-12 10:26am

(.*\s(\d\.\d)\s.*\s(\d\.\d)). Dont understand what you are doing with the .* sign in the middle. Why not stop it half way?

lewax00 9-Aug-12 12:52pm

The parenthesis around it aren't needed, he only wants the numbers not the whole string. Let me break it down: any text (abc), whitespace( ), (number (6), decimal point(.), number(4)), whitespace( ), any text(xyz), whitespace( ), (number(2), decimal point(.), number(5)). I could leave out the "\s"s, but that would also match something like abc4.5xyz2.5, which might not be desired. Specifically I'm trying to match the whole line, because he hasn't provided any other examples that's usually the safest bet.

Kenneth Haugland 9-Aug-12 13:10pm

Aha, so you want to capture the whole string, now I see :) I wondered if I should show OP named capture groups (very useful) but decided not to. A little too complicated ;)

Christian Amado · Answer 2 · 2012-08-09T03:51:00

Solution 1

You must see this page:
http://regexlib.com/[^]

You can test your regular expression here:
http://regex.larsolavtorvik.com/[^]

Hope you can find it useful =)

Posted 9-Aug-12 3:51am

Christian Amado

Updated 9-Aug-12 3:57am

v2

Kenneth Haugland · Answer 3 · 2012-08-09T03:53:00

Solution 2

This is simple, the expreccion could look like this:
(\s\d\[.]\d\s)

You should check out this tool fo rwriting Regular Expressions. It sure helpt me a lot in the past:
Expresso - A Tool for Building and Testing Regular Expressions[^]

Posted 9-Aug-12 3:53am

Kenneth Haugland

Comments

lewax00 9-Aug-12 12:53pm

the \s should not be in the parentheses, because he probably only wants to capture the number, not the whitespace.

Kenneth Haugland 9-Aug-12 13:08pm

Not bad :) And you are right, althoug hes is proberbly going to call Cdbl or CDec on the string, and that should resolve it ;)