https://rosettacode.org/wiki/Countdown#J
task''
terms: 4 7 8 9 10 10
target: 300
#solutions: 1213
for example: (10+(9*10))*((4+7)-8)
The #solutions line takes approaching 20 seconds. That's not the problem here.
The 'for example' line takes several seconds in J903 (and J904). And
the expression is
echo 'for example: ',;{.a
The only thing I can think of is that this time is occupied by garbage
collection.
FYI,
--
Raul
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