如何重复J中表达式的求值？

Question

Given the following expression in J, how do I execute it n times?

6?99

The only solution I could come up with was to turn it into a verb, which works nicely, but I suspect there's a better way:

(3 : '6?99')"0 i.100

Now, before anyone gets confused, this question is not about the specific expression 6?99 . It is a general question about the J programming language. Your answer should be general enough to apply to any J expression, not just 6?99 .

Answer 1

Still turning it into a verb, but this time tacitly

   (6 ? 99"_)"0 i.4
92 61 82  7 67 12
56 76 77 67  9 24
16 31  9 76 70 98
65 24  2 28  1 39

Depending on the verb this could be a little cleaner than explicit.

The usual way of doing this would be to make copies of the left argument, but I sense that is not what you would be looking for?

   n=.4
   6 ? n $ 99
43 55 79 71 35 33
41 56 67  3 78 24
38 34  7 61 14 13
95 63 43 47 73 29