Leetcode 252Meeting Rooms
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Given an array of meeting time intervals consisting of start and end times
[[s1,e1],[s2,e2],...] (si < ei), determine if a person could attend all meetings.For example,
Given
return
Understand the problem:Given
[[0, 30],[5, 10],[15, 20]],return
false.The problem looks very similar to the merge interval and insert intervals. So the idea is still the same: first sort the intervals according to the start times, then check if there is any overlap.
所以正确的解法是将intervals中所有的interval都按start time进行排序，然后判断是否有overlap，如果有overlap就返回false，否则返回true。
The idea is from here
http://buttercola.blogspot.com/2015/08/leetcode-meeting-rooms.html
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