LeetCode:Longest Consecutive Sequence
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题目:
给一个无序整数数组,求数组中最大连续数的长度。
例如,
Given [100, 4, 200, 1, 3, 2]
,
最大连续数是[1, 2, 3, 4]
,它的长度是4.
要求解决方案的时间复杂度是O(N)
这题目描述非常简单,需要点小技巧,提示:使用Map实现。
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