updated the first question due to the mismatched feature between Runestone main server and MOOC server

Author: xinyinghou

_sources/_hidden/mc_nested-nt.rst

@@ -5,28 +5,30 @@ Practice
         :autograde: unittest
         :nocodelens:
 
-        Finish the function ``table_reservation(reservation_dict, guest_num)`` below:
-            - It takes a nested dictionary ``reservation_dict`` representing a restaurant's current reservation situation for a day and a specific number of guests ``guest_num`` as input.
-            - ``reservation_dict`` is a nested dictionary with outer keys as time slots in a day (e.g., breakfast, lunch, dinner), and values as a list of dictionaries where the inner keys are unique researvation IDs and the values are the number of guests for that reservation.
-            - Your goal is to count and return the number of reservations in ``reservation_dict`` with the same guest number as the input ``guest_num``.
+        Finish the function ``add_quantity(item_dict, quantities)`` that “zips” quantities onto their corresponding items inside each category, returning a nested dictionary:
+            - It takes a dictionary ``item_dict`` and a list ``quantities`` as input, the lengths of ``item_dict`` and ``quantities`` are the same.
+            - For dict ``item_dict``, keys are category names (strings), values are lists of unique item names (strings), each list contains at least one item (no empty lists).
+            - For list ``quantities``, it contains the quantity for each item in ``item_dict``. Quantities are given in the same order as the items appear in item_dict when iterated in insertion order, category by category, left to right.
+            - The total number of quantities equals the total number of items in all categories combined.
+            - The function should return a new nested dictionary where the outer dictionary keys are the category names, the inner dictionary keys are the item names, and the inner dictionary values are the quantities.
 
         .. table::
-            :name: nested_merge_course_table
+            :name: nested_quantity_table
             :align: left
             :width: 50
 
-            +----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------+
-            | Example Input                                                                                                                                                        | Expected Output  |
-            +======================================================================================================================================================================+==================+
-            |``table_reservation({"breakfast": [{"G01": 3}, {"G02": 4}], "lunch": [{"G03": 2}, {"G04": 4}], "happy_hour": [{"G05": 6}], "dinner": [{"G06": 2}, {"G07": 8}]}, 4)``  | ``2``            |
-            +----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------+
-            |``table_reservation({"brunch": [{"G01": 2}], "lunch": [{"G02": 2}, {"G03": 4}], "happy_hour": [{"G04": 2}], "dinner": [{"G05": 2}, {"G06": 8}]}, 2)``                 | ``4``            |
-            +----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------+
-            |``table_reservation({"breakfast": [{"G01": 1}], "lunch": [{"G02": 2}, {"G03": 4}], "happy_hour": [{"G04": 6}], "dinner": [{"G05": 2}, {"G06": 8}]}, 6)``              | ``1``            |
-            +----------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------+
+            +--------------------------------------------------------------------------------------+-----------------------------------------------------------------------+
+            | Example Input                                                                        | Expected Output                                                       |
+            +======================================================================================+=======================================================================+
+            |``add_quantity({"Fruits": ["Apples", "Bananas"], "Bakery": ["Bagels"]}, [3, 4, 6])``  | ``{"Fruits": {"Apples": 3, "Bananas": 4}, "Bakery": {"Bagels": 6}}``  |
+            +--------------------------------------------------------------------------------------+-----------------------------------------------------------------------+
+            |``add_quantity({"Drinks": ["Coffee", "Tea", "Juice"]}, [10, 5, 7])``                  | ``	{"Drinks": {"Coffee": 10, "Tea": 5, "Juice": 7}}``                 |
+            +--------------------------------------------------------------------------------------+-----------------------------------------------------------------------+
+            |``add_quantity({"Dairy": ["Milk"]}, [1])``                                            | ``	{"Dairy": {"Milk": 1}}``                                           |
+            +--------------------------------------------------------------------------------------+-----------------------------------------------------------------------+
 
         ~~~~
-        def table_reservation(reservation_dict, guest_num):
+        def add_quantity(item_dict, quantities):
 
 
 
@@ -42,12 +44,10 @@ Practice
         class myTests(TestCaseGui):
 
             def testOne(self):
-                self.assertEqual(table_reservation({"breakfast": [{"G01": 3}, {"G02": 4}], "lunch": [{"G03": 2}, {"G04": 4}], "happy_hour": [{"G05": 6}], "dinner": [{"G06": 2}, {"G07": 8}]}, 4), 2)
-                self.assertEqual(table_reservation({"breakfast": [{"G01": 2}, {"G02": 4}], "lunch": [{"G03": 2}, {"G04": 2}], "happy_hour": [{"G05": 6}], "dinner": [{"G06": 2}, {"G07": 8}]}, 2), 4)
-                self.assertEqual(table_reservation({"breakfast": [{"G01": 2}, {"G02": 4}], "lunch": [{"G03": 2}, {"G04": 2}], "happy_hour": [{"G05": 6}], "dinner": [{"G06": 2}, {"G07": 8}]}, 10), 0)
-                self.assertEqual(table_reservation({"breakfast": [{"G01": 1}, {"G02": 4}]}, 1), 1)
-                self.assertEqual(table_reservation({"lunch": [{"G01": 1}, {"G02": 4}], "happy_hour": [{"G01": 1}, {"G02": 4}]}, 1), 2)
-                self.assertEqual(table_reservation({"breakfast": [{"G02": 4}]}, 9), 0)
+                self.assertEqual(add_quantity({"Fruits": ["Apples", "Bananas"], "Bakery": ["Bagels"]}, [3, 4, 6]), {"Fruits": {"Apples": 3, "Bananas": 4}, "Bakery": {"Bagels": 6}})
+                self.assertEqual(add_quantity({"Drinks": ["Coffee", "Tea", "Juice"]}, [10, 5, 7]), {"Drinks": {"Coffee": 10, "Tea": 5, "Juice": 7}})
+                self.assertEqual(add_quantity({"Bakery": ["Bagel"]}, [12]), {"Bakery": {"Bagel": 12}})
+                self.assertEqual(add_quantity({"Drinks": ["Coffee", "Tea"]}, [12, 1]), {"Drinks": {"Coffee": 12, "Tea": 1}})
         myTests().main()
 
 
@@ -63,7 +63,7 @@ Practice
             - It returns a dictionary ``average_score`` where keys are student names, and values are the average grades for each student.
 
         .. table::
-            :name: item_quantity_table
+            :name: get_average_score_table
             :align: left
             :width: 50
 

_sources/_hidden/mc_pre_survey.rst

@@ -160,13 +160,9 @@ What to do next
 
         // if no prev set cookie: generate random condition and set cookie
         if (cond != 'wt' && cond != 'nt') {
-           var v = Math.floor(Math.random() * 2);
-           if (v < 1) {
-               cond = 'wt';
-           } else {
-               cond = 'nt';
-           }
-           setCookie(EXP_COOKIE, cond);
+            var v = Math.random();
+            cond = (v < 0.5) ? 'wt' : 'nt';
+            setCookie(EXP_COOKIE, cond);
         }
 
         if (cond == 'wt') {

_sources/_hidden/mc_puzzle_bank.rst

@@ -3,26 +3,29 @@
     :adaptive:
     :practice: T
 
-    Finish the function ``table_reservation(reservation_dict, guest_num)`` below:
-        - It takes a nested dictionary ``reservation_dict`` representing a restaurant's current reservation situation for a day and a specific number of guests ``guest_num`` as input.
-        - ``reservation_dict`` is a nested dictionary with outer keys as time slots in a day (e.g., breakfast, lunch, dinner), and values as a list of dictionaries where the inner keys are unique researvation IDs and the values are the number of guests for that reservation.
-        - Your goal is to count and return the number of reservations in ``reservation_dict`` with the same guest number as the input ``guest_num``.
+    Finish the function ``add_quantity(item_dict, quantities)`` that “zips” quantities onto their corresponding items inside each category, returning a nested dictionary:
+        - It takes a dictionary ``item_dict`` and a list ``quantities`` as input, the lengths of ``item_dict`` and ``quantities`` are the same.
+        - For dict ``item_dict``, keys are category names (strings), values are lists of unique item names (strings), each list contains at least one item (no empty lists).
+        - For list ``quantities``, it contains the quantity for each item in ``item_dict``. Quantities are given in the same order as the items appear in item_dict when iterated in insertion order, category by category, left to right.
+        - The total number of quantities equals the total number of items in all categories combined.
+        - The function should return a new nested dictionary where the outer dictionary keys are the category names, the inner dictionary keys are the item names, and the inner dictionary values are the quantities.
     -----
-    def table_reservation(reservation_dict, guest_num):
+    def add_quantity(item_dict, quantities):
     =====
-        count = 0
+        index = 0
+        result = {}
+    =====   
+        for category, items in item_dict.items():
     =====
-        for time_slot, reservations in reservation_dict.items():
+            result[category] = {}
     =====
-            for reservation in reservations:
+            for item in items:
     =====
-                for reservation_id, guests in reservation.items():
+                result[category][item] = quantities[index]
     =====
-                    if guests == guest_num:
+                index += 1
     =====
-                        count += 1
-    =====
-        return count
+        return result
 
 
 .. parsonsprob:: p2-mooc_nested

_sources/_hidden/mc_start.rst

@@ -2,7 +2,7 @@ Python 3 with Nested Dictionaries
 =====================================
 Welcome to the Python 3 with Nested Dictionaries study! 
 This study is part of a research project at the University of Michigan, and your participation will contribute to our understanding of how students learn programming concepts.
-We are researchers at University of Michigan who are trying to improve the teaching and learning of programming.
+We are researchers at the University of Michigan who are trying to improve the teaching and learning of programming.
 
 Purpose of this Study
 ^^^^^^^^^^^^^^^^^^^^^^^^^^