Insert Interval
https://leetcode.com/problems/insert-interval/description/
Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).
You may assume that the intervals were initially sorted according to their start times.
Example 1:
Given intervals [1,3],[6,9], insert and merge [2,5] in as [1,5],[6,9].
Example 2:
Given [1,2],[3,5],[6,7],[8,10],[12,16], insert and merge [4,9] in as [1,2],[3,10],[12,16].
This is because the new interval [4,9] overlaps with [3,5],[6,7],[8,10].
Thoughts
intervals分为三段, 第一段end都在newInterval前, 第二段interval.start 都在newInterval.end前, 和newInterval有overlapping, 把interval不断合并到newInterval中, 第三段是剩下的.
Code
Analysis
时间复杂度O(N).
Last updated
Was this helpful?