LeetCode--Longest Consecutive Sequence(最长连续序列) Pytho
发布时间:2020-12-20 10:41:14 所属栏目:Python 来源:网络整理
导读:题目描述: Longest Consecutive Sequence(最长连续序列) ? 中文: 给定一个未排序的整数数组,找出最长连续序列的长度。 要求算法的时间复杂度为? O(n) 。 ? 英文: Given an unsorted array of integers,find the length of the longest consecutive ele
题目描述: Longest Consecutive Sequence(最长连续序列) ? 中文: 给定一个未排序的整数数组,找出最长连续序列的长度。 要求算法的时间复杂度为?O(n)。 ? 英文: Given an unsorted array of integers,find the length of the longest consecutive elements sequence. Your algorithm should run in O(n) complexity. class Solution(object): def longestConsecutive(self,nums): """ :type nums: List[int] :rtype: int """ Dict = {} for i in nums: Dict[i] = 1 List = Dict.keys() count_max = 0 while(len(Dict)): List = Dict.keys() count = 1 temp_left = List[0] temp_right = List[0] Dict.pop(temp_left) while(1): if temp_left-1 in Dict and temp_right+1 in Dict: count = count+2 temp_left = temp_left-1 temp_right = temp_right+1 Dict.pop(temp_left) Dict.pop(temp_right) continue elif temp_left-1 not in Dict and temp_right+1 in Dict: count = count+1 temp_right = temp_right+1 Dict.pop(temp_right) continue elif temp_left-1 in Dict and temp_right+1 not in Dict: count = count+1 temp_left = temp_left-1 Dict.pop(temp_left) continue else: if count>count_max: count_max=count break else: break return count_max ? ? 题目来源:力扣 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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