"abcabcd" is NOT a valid word because "a" appears twice, "b" appears twice, "c" appears twice, but "d" only appears once!

got the random test with string "p1imv$!nytsvdfrid%3mxgz!h#!pp11imv$$nnyyttssdffrr%%33xxggzzhh##". so there are letters which can appear twice and once, my code says FALSE, but you want it be TRUE. WHY?

[15,1,15,1,-3,1,-8,1,-9,1,8,1,10,1,-7,1,-4,1,-5,1]
'15' appears 2 times. so '2' appears 0 times. but this kata says it should be equal 1. why?!
[-10,1,-1,1,7,1,10,1,-2,1,4,1,-3,1,-2,1,2,1,-7,1,11,1,4,1,-3,1,12,1,12,1,-2,1]
'-10'appears 1 time. so '1' appears 16 times. but this kata says it should be equal 0 ...
i think this kata is broken or author should give us much more info

Testing for 458 and "sfalf": expected 'That was close!' to equal 'Fire!'
69.86% cannot be higher than 70% ... ISSUE

Test.assertEquals(cornerCircle(3), 0.51) ---> this should iquals ~0.43 (exactly 0.4393398282201789).
Test.assertEquals(cornerCircle(17), 2.92) ---> this should iquals ~2.48 (exactly 2.4895923599143472).
broken kata? can someone fix it or we have to wait author?

2 ez 4 six kyu. should be seven or higher

too easy for 6 kyu. rank down plz

should work for n of 0
[ 1, 6, 2, 3, 7, 8, 7 ] 0
[ 1, 2, 3, 4 ] 0

doesn't work! should it be equal 0? i tried @if (n === 0) return 0@ but this not works anyway ...

oh, my bad. i read description wrong. now it works fine. thank you :).

There is an issue in the first example. I think you mean s1=2 and s2=2 too, because you will never get correct array by multiplying s1 and s2 (2 * 4 !== 4). My other tests works fine (exclude first).