Interview Question
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1. sort the train intervals by their start time. Also sort the tea vendors by their start time
- patpat September 30, 20122. try to cover all the train intervals one by one using a greedy algorithm. Every time we chose the tea vendors that starts before max(CurrentCoveredTime, TrainArriveTime), and ends the latest. Update CurrentCoveredTime = TeaVendorEndTime. Repeat this until we cover all the train intervals.