[Jprogramming] (no subject)

[Skip Cave]

Given a set of integers, what is the most concise and or efficient way to
list the numbers along with the sum of all combinations of the numbers? the
products of all combinations?

for example:

a =. 2 5 7
+ f a    NB. 2, 5, 7, (2+5), (2+7), (5+7), (2+5+7)
2 5 7 7 9 12 14

* f a    NB. 2, 5, 7, (2*5), (2*7), (5*7), (2*5*7)
2 5 7 10 14 35 70

The function 'f' should work for any verb and any size right argument noun
vector.

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