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- Put all slots in min priority queue (using start time): NlogN
- Remove min slot from priority queue in a variable 'tempSlot
Iterate through priority queue: removing the minimum slot at a time
- If the start time of removed slot is greater than end time of 'tempSlot' then increase the counter by one and save removed slot as tempSlot.. Otherwise put the combined slot of tempSlot and removed Slot as temp Slot.
Second step is also NlogN.
Code:
- Kumar August 21, 2015