wish I saw this before I spent an hour trying to decide if my math was wrong

I want to approve but i ran the random tests many times and only saw "WINNER" very very rarely. e.g for some reason, winning seems much less frequent than other kata translations so please confirm if the shuffling is working ok.

I think you have provided an incorrect link to your translation. Closing this suggestion for now.

That was fun :-)

Ruby version kumited, please check and comment or approve.

Ruby translation kumited, please check (and approve :-))

Ruby translation kumited

Oooh, that took some working out, and some memory dredging...

kata hint != kata suggestion

Java Translation

Tricky, but fun, made me think

(retired)

...but doesn't also show the actual input...

Test feesback messages have been adjusted to include the actual output.

letter_pairs('BARBER') should return ['BA', 'RB', 'ER'].

This test feedback is unacceptable, as the actual value is not displayed. You can just remove the third argument so the default display is shown instead, which has this information:

expected: ["BA", "RB", "ER"]
     got: [["B", "A"], ["R", "B"], ["E", "R"]]

(compared using ==)

Ruby version kumited