题解 | #合并区间#

# class Interval:
#     def __init__(self, a=0, b=0):
#         self.start = a
#         self.end = b
#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
#
# @param intervals Interval类一维数组
# @return Interval类一维数组
#
class Solution:
    def merge(self, intervals: List[Interval]) -> List[Interval]:
        if len(intervals) < 2:
            return intervals
        intervals.sort(key=lambda x: x.start)
        res = [intervals[0]]
        for interval in intervals:
            if interval != res:
                if interval.start > res[-1].end:
                    res.append(interval)
                elif interval.end > res[-1].end:
                    res[-1].end = interval.end
        return res