Regular expresion to accept NA and numbers

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Hi
I have tried a regex-pattern that should accept only numbers and NA but I cannot arrive at a solution.Any guidance on this will be of great help

Posted 25-May-13 9:04am

Shashwath7

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Zoltán Zörgő 25-May-13 15:13pm

What have you tried?
Since regular expressions check syntax, first define the number format you want to accept!
These are all numbers: 1514, -54, 5.6244435243645, -948.32, 0x1A (hexa), 0401 (octal), 0111101 (binary), -5.4e+65 (exponential format)...

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Maciej Los · Answer 1 · 2013-05-25T10:02:00

Solution 1

Please, read Zoltan's Zorgo comment.

The simplest regex pattern is: \d+|(NA).
where:
\d+ - any digit [0-9] (one or more matches)
| alternative (or)
(NA) - "NA"

Please, have a look here: http://www.regular-expressions.info/reference.html[^]

Posted 25-May-13 10:02am

Maciej Los

Updated 25-May-13 10:03am

v2