Create 1450-num_of_students_doing_hmk.py

Author: stevestar888

1450-num_of_students_doing_hmk.py

@@ -0,0 +1,21 @@
+"""
+https://leetcode.com/problems/number-of-students-doing-homework-at-a-given-time/submissions/
+
+Runtime: 24 ms, faster than 81.31% of Python online submissions for Number of Students Doing Homework at a Given Time.
+Memory Usage: 12.7 MB, less than 62.91% of Python online submissions for Number of Students Doing Homework at a Given Time.     
+"""
+class Solution(object):
+    def busyStudent(self, startTime, endTime, queryTime):
+        """
+        :type startTime: List[int]
+        :type endTime: List[int]
+        :type queryTime: int
+        :rtype: int
+        """
+        result = 0
+        for start, end in zip(startTime, endTime):
+            print(start, end)
+            if start <= queryTime <= end:
+                result += 1 
+        
+        return result