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Programming版 - 请问个老的COMBINATION题
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1 (共1页)
b***y
发帖数: 2799
1
Print all combinations of M members of a set of N elements in a sequence
such that each set can be obtained from the previous set by deleting one
member and adding one member.
a******e
发帖数: 982
2
這是兩三行的小題目吧?
用 Haskell
powerset :: [a] -> [[a]]
powerset [] = [[]]
powerset (x:xs) = xss ++ map (x:) xss
where xss = powerset xs
1 (共1页)
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