Determine if string is any integer, - is optional and if its a leading 0 it can only be 0?

Asked Feb 02 '19 at 02:25

Active Feb 02 '19 at 02:25

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I want to determine if a string is any viable number, I have though made so many conditional statements it's not viable. The number can start with "-" (optional), if it has a leading 0 it can only contain a 0 (still "-" is optional).

Some examples:

123 = true

-123 = true

-0 = true

-00 = false

12+4 = false

I have used .matches but I can't seem to figure out how to put it in as few of conditions as possible.

asked Feb 02 '19 at 02:25

PCheck

I read through some of the comments but didn't find a satisfying answer. – PCheck Feb 02 '19 at 02:30
1

What, precisely, were you expecting? What constitutes a "satisfying" answer? – MarsAtomic Feb 02 '19 at 02:33
What about string representations of float or double type values? – DevilsHnd - 退職した Feb 02 '19 at 02:34
It didn't cover the aspect if the string has a leading zero and more zeros beyond that. – PCheck Feb 02 '19 at 02:34
Nevermind I am the one in the wrong, this question is a duplicate. – PCheck Feb 02 '19 at 02:37

Determine if string is any integer, - is optional and if its a leading 0 it can only be 0?

0 Answers0