Daily LeetCode – day0021 1450. Number of Students Doing Homework at a Given Time

// 1450. Number of Students Doing Homework at a Given Time
class Solution {
    public int busyStudent(int[] startTime, int[] endTime, int queryTime) {
        int ans = 0;
        for (int i = 0; i < startTime.length; ++i) {
            if (startTime[i] <= queryTime && endTime[i] >= queryTime) {
                ++ans;
            }
        }
        return ans;
    }
}

学习笔记：
这是一道超级大水题，就一个for循环里面有个if就没了，三分钟写完。