Unpublishing the kata as a close duplicate with long-lasting unresolved issues.

Should include instructions on how to deal with invalid input. The description is a bit misleading too, as phildinius pointed out.

Issues:

1. the tests are badly designed
2. no random tests
3. the ordering is not specified

Issues:

1. duplicate of many katas
2. no random tests

You state in the description that: the letter must be just a single character, and yet I'm getting tested on the letter $$.

Not exactly, but very close.

There is also another related kata that is exactly the same (count a particular non-zero digit from 1 to n) but with performance requirements.

I mean, the kata very similar to existing ones, so arguing about them not being exact duplicate is kinda pointless. Maybe write a more novel kata instead? ;-)

I don't think it is exactly.

Duplicate of https://www.codewars.com/kata/57ad85bb7cb1f3ae7c000039

There're no tests with number = 0.

No random tests.