Activity for southâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #285703 | Initial revision | — | over 2 years ago |
| Answer | — |
A: It's Hip to be Square J, 6 bytes ```J 0=1|%: ``` Try it online! (more) |
— | over 2 years ago |
| Edit | Post #285702 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Evaluate a single variable polynomial equation J, 2 bytes ```J p. ``` Try it online! J likes inflections so it won't beat APL, but J is still a contender :). (more) |
— | over 2 years ago |
| Edit | Post #285701 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Reverse an ASCII string J, 2 bytes ```J |. ``` Try it online! (more) |
— | over 2 years ago |
| Edit | Post #285700 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Roll n fair dice J, 10 7 bytes ```J +/>:?#/ ``` Try it online! ``` +/>:?#/ #/ : Inserts dyadic # into an array n m Creates n copies of m ? : Roll from 0..y >: : Increment +/ : Sum reduce ``` -3 bytes thanks to torres. (more) |
— | over 2 years ago |
| Edit | Post #285697 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Make $2 + 2 = 5$ J, 7 9 bytes ```J ++2&=@+. ``` Try it online! Dyadic fork that executes with the form `(x + y) + (2 = x +. y)`. Thanks to torres for pointing out the obvious flaw. (more) |
— | over 2 years ago |
| Edit | Post #285665 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Compute the determinant J, 5 bytes ``` -/ . ``` Try it online! For the determinant conjunction, the space before `u` is necessary, so there is no shaving a byte here. If you want to read more about this conjunction, check out NuVoc (more) |
— | over 2 years ago |
| Edit | Post #285643 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Reduce over the range [1..n] J, 11 9 bytes ``` /@(>:@i.) ``` Attempt it online! (more) |
— | over 2 years ago |
| Edit | Post #285640 | Initial revision | — | over 2 years ago |
| Answer | — |
A: "Hello, World!" J, 15 bytes ``` 'Hello, World!' ``` Or if you prefer to beat around the bush...76 bytes. ``` {:a.{-:^:1@:|.&2 S:0<@:<\50 16.5 36 50.5 54 54 55.5 22 16 43.5 55.5 57 54 ``` Try it online! (more) |
— | over 2 years ago |
| Edit | Post #285639 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Repeat the characters J, 1 byte ``` # ``` Try it online! The copy verb. It works the exact same as APL and Jelly's replicate. (more) |
— | over 2 years ago |
| Edit | Post #285638 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Are All Elements Equal? J, 4 bytes ``` -:|. ``` Try it online! Checks if the input array matches itself reversed. This is a tacit form and is executed monadically as `x f (g x)`. (more) |
— | over 2 years ago |
| Edit | Post #285637 | Initial revision | — | over 2 years ago |
| Answer | — |
A: Multiply complex numbers. J, 2 bytes ``` / ``` Try it online! For complex numbers with `0` as the second part, J will represent them as ints, but they are treated the same. (more) |
— | over 2 years ago |
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