Gallaxy brain.

Sorry, I did not know that. I am unable to edit it now..

Please do not posts directly to kata trainer, because everyone who follows such link automatically gets the linked kata marked as started and not finished in their profile. Posts link to kata description page instead.

this is hard i cant understand the function used

Great kata to figure out, interesting concept.

Python, sorry, forgot to tell ya

Oh I was looking at a JS solution of yours (?) . What language is the solution you are referring to?

I was able to make it pass, got lucky I guess. I had another one, which produced slightly longer regexes and passed all the time by the way.

Your solution does not seem to ever pass, unless you had a different one when you made this issue, but without some form of reproducability we can't call this an issue.

My solution passes randomly, the testing system lacks some essential testcases, not sure what they are, but sometimes they appear, sometimes they don't.

The description does not mention if the input strings contain leading zeros or not. It simply says "binary strings" and "binary numbers" which is contradictory, because the first one usually means there may be leading zeros, the second one means the opposite.

This is my first 1-kyu, it was pretty enjoyable to solve!

I'm currently at 3-kyu overall, and had decided to go for a 1-kyu as I have been recently only been solving kata in the range of 8-kyu to 5-kyu, and had wanted to challenge myself by solving either a 1-kyu or my third 2-kyu.

However, I personally think that this is more of a 2-kyu because aside from the algorithm implementation, I wouldn't say that the character limit is that much of an issue. In fact to me the character limit could be 3000-3500 chars and the kata's difficulty would probably still be about the same.

Depends on your country. In Germany, yellow is between Green->Red and Red->Green.

The dot isn't in the allowed chars list. Not a kata issue.