Find minimum plotform to organise trains. arr[]={ 9:40, 9:50, 11:25}; dep[]={ 12:00, 11:20, 11:30}; Expected output : 3 Explanation: arr is arrival time of a train and dep is departure time of a train respectively. 1st train arrive at 9:40 and departure at 12:00. Before this 1st train leave station, 2nd train arrive at 9:50. So we cannot manage these 2 train in 1 plotforms. Like this we need to find minimum trains to organise all trains
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