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LeetCode Contains Duplicate
BabbleDay
posted @ 2015年7月16日 15:32
in 刷题防身
with tags
python array leetcode Contains Duplicate
, 953 阅读
位操作 O(n)
class Solution:
# @param {integer[]} nums
# @return {boolean}
def containsDuplicate(self, nums):
pos, neg = 0, 0
for x in nums:
if x < 0:
temp = 1 << -x
if neg & temp != 0:
return True
pos |= temp
else:
temp = 1 << x
if pos & temp != 0:
return True
pos |= temp
return False
哈希表 O(n)
Python一行
2024年2月28日 00:12
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