Mh, absolute difference isn't going like I'd like it to

for Valid Badminton score? I have (60>+/)∧(∧/0∘≤) for the "valid score part"

I don't know how to sort in a train though, mhm :)

edit: ⊂∘⍋∘⊢⌷⊢

⎕←(2∘>(-/⊂∘⍋∘⊢⌷⊢))0 1

@Ven
1

⎕←(2∘≤|∘(-/(⊂∘⍋∘⊢⌷⊢)))0 1

@Ven
0

⎕←((2∘≤|∘(-/(⊂∘⍋∘⊢⌷⊢))),((60>+/)∧(∧/0∘≤)))21 23

@Ven
1 1

...What monster did I create...

@Ven Why do you need to sort at all?

@Ven Right. For reference, you don't need to sort to check if an array is sorted; ⍋≡⍳∘≢ works too.

I wanted to -/ to get the difference between them (check that |v|<2) to know if the game was on or not.

Er, that's a mistake edit...

@Ven Btw, as you work on fixing the issues, consider making the function dyadic, so +/ and -/ become + and -. I'm not sure if it will save bytes in the long run, but it is worth investigating.

I probably won't be able to fix it until tomorrow btw, which is why I deleted it for now. Feel free to answer, since you posted a comment on the q.