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Regular expression to allow negative and positive numbers?

Question
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Say I have a string that looks like As3H22Br-84Si335Nm+21
The following code will separate the numbers and letters from the string and spit them into 2 separate string arrays.
var numRegx = new Regex(@"\d+"); var numbers = numRegx.Matches(input).Cast<Match>().Select(m => m.Value).ToArray(); var wordRegx = new Regex(@"[a-zA-Z]+"); var words = wordRegx.Matches(input).Cast<Match>().Select(m => m.Value).ToArray();
Right now, it's only accepting just positive numbers. How do I modify the regex(@"\d+") also check for negative numbers?Wednesday, October 2, 2013 8:35 AM
Answers
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But it did. My app is working perfectly with \-*\d+ while it throws an error with -?\d|[a-zA-Z]. Don't ask me how or why.
- Marked as answer by Anne Jing Wednesday, October 9, 2013 1:22 AM
Wednesday, October 2, 2013 4:36 PM
All replies
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Actually, that doesn't work. However, after playing around a bit, I found the answer.
\-*\d+
Now I'm embarrassed. It's so simple.
Wednesday, October 2, 2013 9:29 AM -
Hello ChemCat,
But it can't take like that input: As3H22Br-84Si335Nm-21
Wednesday, October 2, 2013 10:18 AM -
But it did. My app is working perfectly with \-*\d+ while it throws an error with -?\d|[a-zA-Z]. Don't ask me how or why.
- Marked as answer by Anne Jing Wednesday, October 9, 2013 1:22 AM
Wednesday, October 2, 2013 4:36 PM