Negative indices mean that the count is from the end, not from the beginning. So, for example, [-2:] means - from the second from the end (penultimate) to the end.

The zero case test is only in 'sample' testing: test.assert_equals(nba_extrap(0, 0), 0)
I think it should be in the final testing too.

So simple.. Love it!

Thank you, it helps!)

I get an error when submitting this code- anyone know why?

Description still incomplete/incorrect, with respect to the rules for the remaining words: when is the word "Sean!" and when "SEAN!"

I gave an error "Math. "... supposedly does not exist in this context.

"src/Solution.cs(9,12): error CS0103: The name 'Math' does not exist in the current context"

Nise....

capitalize is a really decent way to solve this kata

Can someone explain some of the components of this code to me? I don't fully understand what "(\d{3})" is doing

Same but with a dict xD

clever

I think this is unclear - '[][]]]][[[[[[][]', could be ['', '', '[[[[[', ''] and could be ['',']]]','[[[[[','']

With most languages, it is a matter of just knowing how to use regex, and it is essentially 1-2 lines. A lot of the kata on here are very simple if you can use regex. I am kind of novice at it but can cludge through them, but if you look at the solutions from people who really have inversted some time into regex, they can breeze through these like they were all print "hello world" .

Done