每日一题(84) - 区间重合判断 - 思考，思考，再思考~ - 博客频道 - CSDN.NET



思路(2)编程之美的思路

离线操作：根据区间的起始值，对给出的区间排序，之后区间合并。时间复杂度O(n)

在线操作：根据区间的起始值，进行二分查找。时间复杂度O(nlogn)。

缺点：不能支持区间动态添加或者删除。数组存储时，添加和删除操作不方便。


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