题解 | #NC37 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) <= 1:
            return intervals
        temp = sorted(intervals, key=lambda x: x.start)
        res = []
        res.append(temp[0])
        for i in range(1, len(temp)):
            if (res[-1].end >= temp[i].start):
                res[-1].end = max(res[-1].end, temp[i].end)
            else:
                res.append(temp[i])
        return res