RosettaCodeData/Task/Knuths-algorithm-S/J/knuths-algorithm-s-1.j

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coclass'inefficient'
create=:3 :0
N=: y
ITEMS=: ''
K=:0
)
s_of_n=:3 :0
K=: K+1
if. N>#ITEMS do.
ITEMS=: ITEMS,y
else.
if. (N%K)>?0 do.
ITEMS=: (((i.#ITEMS)-.?N){ITEMS),y
else.
ITEMS
end.
end.
)
s_of_n_creator_base_=: 1 :0
ctx=: conew&'inefficient' m
s_of_n__ctx
)