You're right, thanks for your advice, i'll rework it tomorrow and try to make it clear !

You're rigtht, i'll figure it out, thanks !

This should've been a nice simple kata, now it's evolved to something that doesn't quite make sense :/ Focus on writing good specifications, rather than adding more examples. You can choose to restrict the longest line to be unique, or define how they should be handled. Also, adding these requirements with empty lines and stuff only distracts from the actual task :\

i think there's still an issue. I'm on a phone and debugging is a pain, but here's an example.

expected 'kkkk\nkkkkk\nkkkkkk\nkkkkkkk\nkkkkkkkkk\nkkkkkkkkkkk\nkkkkkkkkkkkk\nkkkkkkkkkkkkk\nkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkk\nkkkkkkkkkkkkk\nkkkkkkkkkkkk\nkkkkkkkkkkk\nkkkkkkkkk\nkkkkkk\nkkkk' to equal 'kkkk\nkkkkk\nkkkkkk\nkkkkkkk\nkkkkkkkkk\nkkkkkkkkkkk\nkkkkkkkkkkkk\nkkkkkkkkkkkkk\nkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkkkkkk\nkkkkkkkkkkkkkk\nkkkkkkkkkkkkk\nkkkkkkkkkkkk\nkkkkkkkkkkk\nkkkkkkkkk\nkkkkkk\nkkkk'

Anyway, i added some examples, tell me if it improve clarity or not

Hi ! Thanks for your feedback, that wasn't about size of lines, that was the composition of, so i added constraint on blank lines removing.

The new solution remove blank lines.

I believe there's still an issue with removing duplicate largest lines:

expected '\njjjj\njjjjj\njjjjjj\njjjjjjj\njjjjjjjj\njjjjjjjjj\njjjjjjjjjj\njjjjjjjjjjj\njjjjjjjjjjjj\njjjjjjjjjjjjj\njjjjjjjjjjjjjj\njjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjj\njjjjjjjjjjjj\njjjjjjjjjjj\njjjjjjjjjj\njjjjjjjjj\njjjjjjjj\njjjjjjj\njjjjjj\njjjj' to equal '\njjjj\njjjjj\njjjjjj\njjjjjjj\njjjjjjjj\njjjjjjjjj\njjjjjjjjjj\njjjjjjjjjjj\njjjjjjjjjjjj\njjjjjjjjjjjjj\njjjjjjjjjjjjjj\njjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjjj\njjjjjjjjjjjjjjj\njjjjjjjjjjjj\njjjjjjjjjjj\njjjjjjjjjj\njjjjjjjjj\njjjjjjjj\njjjjjjj\njjjjjj\njjjj'

What do you mean, what is not clear in spec ?
(You're surely right, but, if you can explain what you do not understand, i'll be able to try to clarify it)

I no longer understand anything about the spec

I'm back, i did some clarification in description (i hope), added some new examples to be more understandable in task and rework code to disallow middle side duplication, thanks for your feedbacks guys !

I added fixed tests and decrease random tests count, again thanks for your feedback, it helps !

Hi ! Thanks for your feedback, i'll clarify that point and rework specs consequently !

Hi ! I'll rework it, thanks for your feedback

The second example in description shows duplicate lines on each end of the biggest line, but no duplicates within one side.

a
aa
aaa
aaaa
aaaaa
aaaaaaaaaaa
aaaaa
aaa
aa
a

I thought the spec was that there should not be two consecutive equal lines.

Surely spec needs to be clarified.