scala数据分析，使用纯scala进行group by重叠间隔

case class DataPoint(startTime: Long, endTime: Long)

val data = List(
  DataPoint(10, 20),
  DataPoint(15, 30),
  DataPoint(25, 35),
  DataPoint(40, 50)
)

val groupedData = data.groupBy { case DataPoint(startTime, endTime) =>
  startTime / 10 // 按照每10个单位时间进行分组
}

val overlappingIntervals = groupedData.values.filter(_.size > 1) // 筛选出有重叠的分组

val overlappingIntervalsWithDuration = overlappingIntervals.map { group =>
  val sortedGroup = group.sortBy(_.startTime) // 根据起始时间进行排序
  val overlapStart = sortedGroup.head.startTime
  val overlapEnd = sortedGroup.last.endTime
  val overlapDuration = overlapEnd - overlapStart
  (overlapStart, overlapEnd, overlapDuration)
}

overlappingIntervalsWithDuration.foreach { case (start, end, duration) =>
  println(s"Overlap Interval: [$start, $end], Duration: $duration")
}