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kotlinlang

I’d like to create a scheduler app that contains a list of events. Each event has a `startDate` and an `endDate` . I’d like to determine which events overlap so I can place events in a different column.  Is there a way to apply some sort of `groupBy` function to accomplish a way for me to group them?

if your events are sorted by start date, you can `fold` into a list of lists, appending the event to the current list while the event's start date is less than the latest endDate of the current list