leetcode-189周赛-1450-在既定时间做作业人数

 提交：

class Solution:
    def busyStudent(self, startTime: List[int], endTime: List[int], queryTime: int) -> int:
        count = 0
        for i in range(len(startTime)):
            if startTime[i] <= queryTime <= endTime[i]:
                count += 1
        return count

 另：

class Solution:
    def busyStudent(self, startTime: List[int], endTime: List[int], queryTime: int) -> int:
        return sum(a<=queryTime<=b for a,b in zip(startTime,endTime))