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How can ^\d+$ be improved to disallow 0?
EDIT (Make it more concrete):
Examples to allow:
1
30
111
Examples to disallow:
0
00
-22
It doesn’t matter if positive numbers with a leading zero are allowed or not (e.g. 022).
This is for Java JDK Regex implementation.
Try this:
…and some padding to exceed 30 character SO answer limit :-).
Here is Demo