type IntervalItem = {
  min: number;
  max: number;
}
// 校验区间数组是否重叠
export function overlapIntervals(intervals: IntervalItem[]) {
  if (intervals == null) {
    return true
  }
  let size = intervals.length
  intervals.sort((a, b) => a.max - b.max);
  for (let i = 0, j = 1; i < size - 1 && j < size; j++) {
    if (intervals[i].min > intervals[i].max) {
      return false
    }
    if (intervals[i].max > intervals[j].min) {
      return false
    }
    i = j
  }
  return true
}