5 lines
186 B
Erlang
5 lines
186 B
Erlang
powerset(Lst) ->
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N = length(Lst),
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Max = trunc(math:pow(2,N)),
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[[lists:nth(Pos+1,Lst) || Pos <- lists:seq(0,N-1), I band (1 bsl Pos) =/= 0]
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|| I <- lists:seq(0,Max-1)].
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