I think their solutions won't be affected as they've already passed? Is it out of beta? It's probably best to leave it as is :o).

You're right, I only just realised that toString() was a bad choice for a function name. But if I change it now, won't it cause solutions that other people have submitted in the past to fail?

Nevermind, ignore my first post--I must've changed the initial name of the function because upon reset 'toString(time)' was the name lol!

I still suggest changing the name of the function to something else though, since 'toString()' is a built in Enumerable method.

Also, I think in the first example after:

"Always show the number of minutes and seconds, but don't show the hours if less than one hour"

there's a small typo. It shows 0:59:00 'is correct' instead of 'is not correct'.

If you load the first one, I think Kumites are just forked Kata, so you could fork the one to make the others?

Hey gentoomaniac, I think this is just a misunderstanding of the output. The function should return the number of characters that repeat, not the number of times that the characters repeat. In the test case you mentioned, the number 2 refers to how many letters repeat in that string--in this case two letters ("a" and "b") repeat (number of times is irrelevant), so the ouput is 2.