OK, conjunction recur =: 2 : '(, u)^:n'
and you can still write the verbs. As you can see, the result of recur applies u to the current list and appends that result to the current list, repeating this operation n times. Just about any list can be produced by designing an appropriate u . Your assignment is to design verbs fib, arith, and e . Kip Murray Sent from my iPad On Dec 23, 2012, at 9:00 PM, km <k...@math.uh.edu> wrote: > Write a conjunction recur and verbs fib, arith, and e that do the following > > fib recur 5 [ 1 1 NB. five additional terms of Fibonacci sequence > 1 1 2 3 5 8 13 > 0.5&arith recur 5 [ 3 > 3 3.5 4 4.5 5 5.5 > 1&e recur 5 [ '' > 1 1 0.5 0.166667 0.0416667 > +/ 1&e recur 10 [ '' > 2.71828 > +/ _1&e recur 10 [ '' > 0.367879 > ^ 1 _1 > 2.71828 0.367879 > > Conjunction recur helps create "recursive" lists. > > Kip Murray > > Sent from my iPad > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
