How did you come up with those formulas?

当你一打开kata, 你会看到几行编码，这些编码是错的，你必须增加,减少或是改掉其中的代码。其背后真正原理在这里 （中文版的链接^^)

为啥它不能通过样例啊？Why can't it pass?(I can't speak English)

I don't really understand this things here, please can anyone help me out!

That's not my solution, that's another person solution I was testing, but random tests don't produce lists with a length equal to 9 and that solution doesn't work now.

Did you read the message after you completed the kata? There is an explanation there.

wow now thats efficient! I solved it in 40 lines

Yea, Its alot harder kata than 7

I think he's trolling too. He's a good troll, because it takes so much free time to write this code.=))))

if it ever gets this long and repetitive look for a better way right? or is this considered cool? not clever at all

your a cool dood