Create number-of-students-doing-homework-at-a-given-time.cpp

Author: kamyu104

C++/number-of-students-doing-homework-at-a-given-time.cpp

@@ -0,0 +1,15 @@
+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    int busyStudent(vector<int>& startTime, vector<int>& endTime, int queryTime) {
+        int result = 0;
+        for (int i = 0; i < startTime.size(); ++i) {
+            if (startTime[i] <= queryTime && queryTime <= endTime[i]) {
+                ++result;
+            }
+        }
+        return result;
+    }
+};