Practical numbers: Difference between revisions
Content added Content deleted
(→{{Header|Python}}: Uses Haskell type signature instead of Python.) |
(→{{Header|Python}}: Remove empty set from powerset calculator.) |
||
| Line 46: | Line 46: | ||
def powerset(s: List[int]) -> List[Tuple[int, ...]]: |
def powerset(s: List[int]) -> List[Tuple[int, ...]]: |
||
"""powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3) .""" |
"""powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3) .""" |
||
return chain.from_iterable(combinations(s, r) for r in range(len(s)+1)) |
return chain.from_iterable(combinations(s, r) for r in range(1, len(s)+1)) |
||
# %% Practical number |
# %% Practical number |
||