The tests have been updated now to be consistent.

I've been playing around with this and I'm not sure why it is timing out. When I timed this implementation and put it against mine, it was about twice as slow for large strings (~3000 characters) but almost identical for small strings. But the weird thing is, even though it was twice as slow, I could only get it to pass around 10 random tests before timing out while mine could pass all 100 tests.

However, I did find an error in how large the strings were for the random tests. The other languages have random strings where the length is between 0 and 100 characters. The clojure tests were doing between 0 and 3000 characters.

Here's the fix for that bug and hopefully that will make your implementation pass. https://www.codewars.com/kumite/5c89cc3ead83841ec16a0e1d?sel=5c991d09d74b05250a1129d2

Clojure Translation: https://www.codewars.com/kumite/5c9145f0bf3fcd7d074b93c0?sel=5c9145f0bf3fcd7d074b93c0

Definitely. I'll keep an eye out for any issues.

Clojure Translation

Here's a clojure translation :)