LeetCode #1450. Number of Students Doing Homework at a Given Time

题目

1450. Number of Students Doing Homework at a Given Time

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解题方法

遍历数组判断queryTime是否在startTime[i]和endTime[i]之间即可，返回满足条件的个数。
时间复杂度：O(n)
空间复杂度：O(1)

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代码

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