C# Regular Expressions

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Guest

I have a series of number that need parsed. Strip the zeros, if a caret
exists replace it with a slash.

1.) 000123^2 - should be 123/2
2.) 1^2 - should be 1/2
3.) 0001 - should be 1
4.) 000123 - should be 123

I have this started:
Regex r = new Regex(@"(?<base>[1-9]{1}\d*)\W(?<group>\d*)");
Console.WriteLine(r.Match(value).Result("${base}/${group}"));

I do not know how to do the condtional to exclude the slash on examples 3
and 4. How do I prevent the addition of the slash when there is no caret in
the number?

Thanks!
 
Sorry,

it doesn't work for "00010^2"

Thanks though

Kevin Spencer said:
stringVariable.Replace('^', '/').Replace('0', '');

--
HTH,

Kevin Spencer
Microsoft MVP
Software Composer
http://unclechutney.blogspot.com

A watched clock never boils.

Stedak said:
I have a series of number that need parsed. Strip the zeros, if a caret
exists replace it with a slash.

1.) 000123^2 - should be 123/2
2.) 1^2 - should be 1/2
3.) 0001 - should be 1
4.) 000123 - should be 123

I have this started:
Regex r = new Regex(@"(?<base>[1-9]{1}\d*)\W(?<group>\d*)");
Console.WriteLine(r.Match(value).Result("${base}/${group}"));

I do not know how to do the condtional to exclude the slash on examples 3
and 4. How do I prevent the addition of the slash when there is no caret
in
the number?

Thanks!
Click to expand...
Click to expand...
 
You'll have to explain what you mean by "it doesn't work."

--
HTH,

Kevin Spencer
Microsoft MVP
Software Composer
http://unclechutney.blogspot.com

A watched clock never boils.

Stedak said:
Sorry,

it doesn't work for "00010^2"

Thanks though

Kevin Spencer said:
stringVariable.Replace('^', '/').Replace('0', '');

--
HTH,

Kevin Spencer
Microsoft MVP
Software Composer
http://unclechutney.blogspot.com

A watched clock never boils.

Stedak said:
I have a series of number that need parsed. Strip the zeros, if a caret
exists replace it with a slash.

1.) 000123^2 - should be 123/2
2.) 1^2 - should be 1/2
3.) 0001 - should be 1
4.) 000123 - should be 123

I have this started:
Regex r = new Regex(@"(?<base>[1-9]{1}\d*)\W(?<group>\d*)");
Console.WriteLine(r.Match(value).Result("${base}/${group}"));

I do not know how to do the condtional to exclude the slash on examples
3
and 4. How do I prevent the addition of the slash when there is no
caret
in
the number?

Thanks!
Click to expand...
Click to expand...
Click to expand...
 
Stedak said:
Sorry,

it doesn't work for "00010^2"
Click to expand...

Well, it does exactly what you originally specified - it strips all the
zeroes and changes the caret into a slash. I suspect what you *meant*
to say was that *leading* zeroes should be stripped, in which case you
can use

stringVariable.TrimStart('0').Replace('^', '/')
 
Kevin Spencer said:
I suspected that too, Jon, but I wanted him to think through his analysis.
Click to expand...

I reckoned your reply (and the start of mine) would be enough to
highlight that a specification needs to be thought through carefully -
but thought he might not be aware of the TrimStart method.
 
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