Regex number between 1 and 100

Try it, This will work more efficiently.. 1. For number ranging 00 - 99.99 (decimal inclusive)

^([0-9]{1,2}){1}(\.[0-9]{1,2})?$

Working fiddle link

https://regex101.com/r/d1Kdw5/1/

2.For number ranging 1-100(inclusive) with no preceding 0.

(?:\b|-)([1-9]{1,2}[0]?|100)\b

Working Fiddle link

http://regex101.com/r/mN1iT5/6

Try:

^[1-9][0-9]?$|^100$

Working fiddle

EDIT: IF you want to match 00001, 00000099 try

^0*(?:[1-9][0-9]?|100)$

FIDDLE

For integers from 1 to 100 with no preceding 0 try:

^[1-9]$|^[1-9][0-9]$|^(100)$

For integers from 0 to 100 with no preceding 0 try:

^[0-9]$|^[1-9][0-9]$|^(100)$

Regards

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