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Regex - Numbers

Numbers only

^[0-9]*$

2. 5 digits only

3. Minimum 3 digits

4. 2-5 digits

5. 0 and numbers not begin with 0

(0

6. Numbers not begin with 0 and maximum 2 decimals

7. Positive or Negative numbers with maximum 2 decimals

8. Positive, Negative numbers and any decimal length

(\-

9. Numbers with maximum 2 decimals

10. Numbers with 1-5 decimals

11. Positive Integer, excluding 0

OR

12. Negative Integer, excluding 0

OR

13. Positive Integer

OR

[1-9]\d*

14. Negative Integer

-[1-9]\d*

OR

15. Positive floating-point

[1-9]\d\.\d

OR

[1-9]\d\.\d	0\.\d[1-9]\d	0?\.0+

16. Negative floating-point

OR

-([1-9]\d\.\d

OR

(-([1-9]\d\.\d	0\.\d[1-9]\d))	0?\.0+

OR

17. Floating-point

-?([1-9]\d\.\d	0\.\d[1-9]\d	0?\.0+