Problem

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.

Examples

Example 1:

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Input: intervals = [(0,30),(5,10),(15,20)]
Output: false
Explanation: 
(0,30), (5,10) and (0,30),(15,20) will conflict

Solution

This problem is similar to Check if Intervals Overlap. If the intervals overlap, we return false.