Approve me too ;-)

hm... didn't think that such a simple pattern would work. but okay i guess.

Enabled in this fork

kata retired.

This is not an issue with the kata, this is an issue with your code. The input that you're failing on is not 123 , look more closely.

A simple but very interesting Kata. Grate job with the test cases. :D

Kata description should not contain external links, all information && requirements should be contained within, and if any other information is required due to a lack of knowledge or understanding, then it is up to the solvers to dig the info themselves (very easy these days ~~ ^^

First Google Search Result

I would suggest to include links to learn the topics that are labeled.

Any recomendation on a good resource on java regex topic?

No need to use regex to complete this kata

i added this fixed test to C.

(C translation)
I had a bad approach to accepting the sign which completely passed the full tests but correctly fails after I added this to sample tests:

do_test(".+25", false);

There is of course already one like it:

	do_test("2.+25", false);

but my original way of permitting the + handled that one "accidentally correctly" by noting that there was a digit before it without bothering about its position in the string. After fixing my solution I hacked it back into a fork, which shouldn't have passed.