Subsets (Python)
kitt
posted @ 2014年2月06日 11:36
in LeetCode
, 2373 阅读
class Solution:
# @param S, a list of integer
# @return a list of lists of integer
def subsets(self, S):
S.sort()
res = []
length = len(S)
if length == 0:
return res
for i in xrange(2 ** length):
subset = []
binary = bin(i)[2:]
binary = '0' * (length - len(binary)) + binary
for j in xrange(length):
if binary[j] == '1':
subset.append(S[j])
res.append(subset)
return res
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