[Jprogramming] Beginner question

[Ulrich Vollert]

Hello,

for some weeks, I am learning J in my (very little) spare time. And I have a (beginner) question.

After reading a lot (first place: „Learning J“) and doing some exercises, I am developing a small Monte Carlo simulation.

I have a dyadic verb „play“ which does a simulation step (calling random generator, calculating) and answering a result. My first attempt to call this verb in a loop was:

 simuls=: 1000  NB. count of simulations

 i=. simuls
 result=.0
 while. i > 0 do.
   result=.result + x play y
   i=.i-1
 end.
 result % simuls

But this doesnt look and feel as J style. My second attempt is to duplicate the second argument as often as I want to do the simulation:

 (+/%#) x play_hand (simuls # y)

or shorter:

 (+/%#) @: play_hand simuls&#

I am wondering whether this is a good solution (for instance: space efficiency)? Would a solution with Power (^:) a better approach?

Thanks in advance for your comments.
Ulrich
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