Sorry, forgot to thank you for your help! Solved the problem in no time thanks to your test case note!

English is apparently such a mess.

Holy.. Never felt this stupid. Much sorry and a big thank you for pinpointing the problem! I'm done with this kata now 😄

I apologize for my earlier rude behaviour . I have re-read the description many times with all concentration i am capable of, but still struggle to understand why index 3 of a 4-item array with one page consisting of one element would be equal to 1. From the examples in the task description it looks very clear to me that 3rd index should belong to page with index 3, since 3rd index is the last element in the array. I would highly appreciate if you could explain why i am wrong.

Does this map avoid recursion? If so, clever and practical idea!

Edge case: List [1,2,3,4] with 1 item per page:
page_item_count is returning incorrect value for page_index 3: 0 should equal 1

Excuse me?? I know my answer is not correct, but why does it expect 1 if it should've been 4(th page)?

List comprehension is unnecessary ; other than that, my code is the same!

If text is 'SomeTextWithDuplicates', my function should return 4 or 3? i.e., should i separate uppercase letters from lowercase letters?

so many unnecessary code....