Without specifics, this issue is useless. Please provide language and specific test cases. Closing.

4^2 + 9^2

Imagine a spiral staircase, where walking [n, w, s, e] will result in going up (or down) the stairs. But walking [n, s, e, w] in that order will result in staying put.
Anyway, better to follow the problem spec than to complain about it.

I removed a section of code that was valid before codewars upgraded. Should be fixed now. Thanks for reporting it.

Try again guys.

Ditto! I pass the trial. Then when I submit it says I pass 52 tests and fail 52 tests. But it won't show me the test results, so I don't know what is wrong. I am programming in javascript and assuming that the array contains only unique numbers, etc.

For me, Javascript

Which language?

Same here! I'm getting 52/51, still don't know why!

"cannot find symbol"

Don't you have the name of the symbol which is not found? Certainly you have misspelled some word.

What is the concrete problem?
This kata works without problems.

Please give examples of test-cases, that do fail.

It is all in the description:

"As an added challenge, upper- and lowercase letters are considered the same character, but the function should return the correct case for the initial letter. For example, the input 'sTreSS' should return 'T'."

Same here, tests fail in C#

42 + 92