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10 lines
365 B
Python

class py_solution:
def sub_sets(self, sset):
return self.subsetsRecur([], sorted(sset))
def subsetsRecur(self, current, sset):
if sset:
return self.subsetsRecur(current, sset[1:]) + self.subsetsRecur(current + [sset[0]], sset[1:])
return [current]
print(py_solution().sub_sets([4,5,6]))