What programming language has this syntax?

Question

I came across this statement as code, on a programming puzzle web site.

(i. >./) (0 >. +)/@:|.\ a

Wondering, what language has these type of syntax?

Answer 1

That's probably the J programming language. For example, here's a page that mentions the (i. >./) idiom

(I wanted to say Perl as a joke ;)