# [Solved] 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]. ## 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 = 4
Output: 1
Explanation: 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 = , endTime = , queryTime = 4
Output: 1
Explanation: 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)```