1450.number-of-students-doing-homework-at-a-given-time.java

class Solution {
    public int busyStudent(int[] startTime, int[] endTime, int queryTime) {
        int res = 0;
        for(int i=0;i<startTime.length;i++){
            if(startTime[i] <= queryTime &&  endTime[i] >= queryTime)
                res++;
        }
        return res;
    }
}