Meeting Rooms - Check if a person can attend all meetings

Check if a person can attend all meetings given an array of meeting start and end times. Meetings must not overlap, and sorting helps verify this efficiently. Use nested loops for naive checks or sorting for optimized checks. Example: Input [[2, 4], [1, 2], [7, 8], [5, 6], [6, 8]] gives output "false". Sorting ensures a time complexity of O(n*log(n)).

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