Table of Contents

## Question

Given two integer arrays `startTime`

and `endTime`

and given an integer `queryTime`

.

The `ith`

student started doing their homework at the time `startTime[i]`

and finished it at time `endTime[i]`

.

Return *the number of students* doing their homework at time `queryTime`

. More formally, return the number of students where `queryTime`

lays in the interval `[startTime[i], endTime[i]]`

inclusive.

**Example 1:**

Input:startTime = [1,2,3], endTime = [3,2,7], queryTime = 4Output:1Explanation:We have 3 students where: The first student started doing homework at time 1 and finished at time 3 and wasn't doing anything at time 4. The second student started doing homework at time 2 and finished at time 2 and also wasn't doing anything at time 4. The third student started doing homework at time 3 and finished at time 7 and was the only student doing homework at time 4.

**Example 2:**

Input:startTime = [4], endTime = [4], queryTime = 4Output:1Explanation:The only student was doing their homework at the queryTime.

**Constraints:**

`startTime.length == endTime.length`

`1 <= startTime.length <= 100`

`1 <= startTime[i] <= endTime[i] <= 1000`

`1 <= queryTime <= 1000`

## Python Solution

class Solution: def busyStudent(self, startTime: List[int], endTime: List[int], queryTime: int) -> int: r=0 for s,e in zip(startTime,endTime): if queryTime in range(s,e+1): r+=1 return (r)