Question

I have to validate using regex decimal number between 00.00 to 35.35 with following simple assumptions(I am using C#).

1) leading zeros are not required(optional).
2) 2 decimals are always required.

In other words, it should be a decimal number within a range with 2 decimal points.

Examples of valid numbers are: 0.00, 00.00, .67, 2.89
and should fail on those numbers: 8.9999(4 decimals), 65.00(out of range)

I had no difficulty to validate 2 decimal points but don’t know how to do the range?
Is this something that even can be done using regex?

Answer 1

Try this regular expression:

^(0?\d|[12]\d|3[0-4])?\.\d\d$|^35\.([02]\d|3[05])$