Q12 Reverse Phone Lookup (Part 2)You have been asked to write a function that supplies the "reverse lookup" name for the person associated with a phone number. This means that given aphone number, you get the name of the person who is registered with that phone number. For this problem, you have been asked to write a solution using adictionary1 def reverse_lookup_dictionary(phone_num: str,phone_to_name: dict[str, str]) -> str:**"This function receives a phone number phone_num, and a dictionary3phone_to_name in which each key is a phone number and each valueis the name associated with that phone number.45.7.Return the name associated with phone_num in phone_to_name, or8.an empty string if there is no match.>>> reverse_lookup_dictionary("416-555-3498", {"416-555-3498": \"John A. Macdonald", "647-555-9812": "Louis Riel", "416-555-6543": \"Canoe Head", "905-555-6681" :"Tim Horton"})10111213'John A. Macdonald'14HistorySubmitpe here to search100%10°C Mostly cloudy du

def reverse_lookup_dictionary(phone_num, phone_to_name): if phone_num in phone_to_name: return…

Reverse Phone Lookup (Part 2) You have been asked to write a function that supplies the "reverse lookup" name for the person associated with a phone number. This means that given a phone number, you get the name of the person who is registered with that phone number. For this problem, you have been asked to write a solution using a dictionary 1 def reverse_lookup_dictionary(phone_num: str, 2. phone to_name: dict[str, str]) -> str: **"This function receives a phone number phone_num, and a dictionary phone_to_name in which each key is a phone number and each value is the name associated with that phone number. 3. 5. 6. Return the name associated with phone_num in phone to name, or an empty string if there is no match. 7. 8 9. >>> reverse_lookup_dictionary("416-555-3498", ("416-555- 3498": \ "John A. Macdonald", "647-555-9812": "Louis Riel1", "416-555-6543": \ "Canoe Head", "905-555-6681":"Tim Horton"}) 10 11 12 13 "John A. Macdonald' 14

Reverse Phone Lookup (Part 2) You have been asked to write a function that supplies the "reverse lookup" name for the person associated with a phone number. This means that given a phone number, you get the name of the person who is registered with that phone number. For this problem, you have been asked to write a solution using a dictionary 1 def reverse_lookup_dictionary(phone_num: str, 2. phone to_name: dict[str, str]) -> str: **"This function receives a phone number phone_num, and a dictionary phone_to_name in which each key is a phone number and each value is the name associated with that phone number. 3. 5. 6. Return the name associated with phone_num in phone to name, or an empty string if there is no match. 7. 8 9. >>> reverse_lookup_dictionary("416-555-3498", ("416-555- 3498": \ "John A. Macdonald", "647-555-9812": "Louis Riel1", "416-555-6543": \ "Canoe Head", "905-555-6681":"Tim Horton"}) 10 11 12 13 "John A. Macdonald' 14

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Homework Assignment-1Topics: Functions, Dictionary, ImportProblem description: Write a python application to simulate an online clothing system. Thepurpose of this assignment is to gain experience in Python dictionary structure, create basicPython functions and import a module.Design solution: The template file contains a list of clothes item sold, each item in the listcontains the item id, name of the item and the prices. The program will generate an items_dictwhere each key is the item id of the cloth and the values will be a list of item name and priceinformation. A customer will be presented with a main menu with 4 different options: displayall items, add an item to cart, checkout and exit the program. A customer can buy an item byentering the ID of the item. This program implements a dictionary called cart, where each key isthe item id and the values are the list of name, price and quantity that user chooses topurchase. The program keeps repeating by displaying the main menu to…
JS Write a function named number_of_pairs whose parameter is an object/dictionary with strings as keys and integers as values. Your function should returns the number of key-value pairs in the parameter.
Estimated Completion Time: 2 minutes You are now working for Prof. Midas on a research project. You are given this piece of code to review which is intended to be a better and faster implementation of a function that checks whether a given key is in a dictionary (i.e., key lookup). You have to present your findings to Prof. Midas. Select all the findings which you will NOT present (i.e., select all answers which are FALSE). def key_in_dict(d, k): for item in d: if k == item: return True return False This code would always be slower than the builtin key lookup Python provides. O A key lookup in a dictionary in Python is generally faster than determining whether a value is in a list. O This code is way faster and will be included in the next version of Python (version 4.1). The code is incorrect from a functional perspective, the True and False should be switched. This code could be replaced with one line: return k in d O The code is correct and would always perform faster than the…
python exercise: Write a Python function called get_top_students that takes the list of dictionaries as input and returns a dictionary containing the name and GPA of the top two students in the list. Each dictionary has the following keys: "name", "age", "major", and "gpa".
13. While dictionaries are designed so that we can find a value based on a key, every so often we need to perform a reverse lookup. For example, imagine a dictionary where the keys are names and the values are phone numbers. Usually we want to find the phone number based on the name, but occasionally you might need to find a name based on the phone number. Write a function called reverse_lookup(dictionary, value) that returns all the keys in the dictionary associated with the specified value. Note: In dictionaries, the keys are guaranteed to be unique, but the values are not. So your function should return a list containing all of the matching keys (if any) Example: Given this dictionary, groups = {'Apple': 'Fruit', 'Spinach': 'Vegetable', 'Banana': 'Fruit'} reverse_lookup (groups. Vegetable') ["Spinach'] reverse_lookup (groups, Fruit') ['Apple'. 'Banana'] reverse_lookup (groups. 'Meat') []
Part 3: Time for a Financial Checkup Complete the function financial_checkup, which takes a dictionary representing your monthly budget for certain categories of expenditures (budget), and a dictionary that represents how much you actually spent in each category (outlays). The function then creates and returns a new dictionary of those categories in which you overspent and the excess amount. Specifically, the returned dictionary maps the category name to the amount of excess spending, given as a negative number. If a category appears in outlays, but not budget, we interpret this to mean that we budgeted $0 for that category, so the entire amount in outlays is considered to be excess spending. Example #1: budget: spent returned: {'food' -95, 'travel': -100} Example #2: budget: spent {'food': 125, 'gas': 75, 'travel': 400} {'food' 220, 'gas': 10, 'travel': 500} Example #3: {'food' 100, 'gas': 30} {'food' 220, 'gas': 10, 'travel': 500} returned: {'food": -120, 'travel': -500} {'drinks'…
C language. Function write the arraylist_sort function This generic function sorts an array list using the given compare function. l An array list compare Pointer to the function which compares two elements If you cannot write down a generic function which works for all types, write down a function which sorts resturants. If you cannot use function pointers, you can write down multiple functions which sort using different criteria.
Task 01 Write a function that takes a dictionary as a parameter. The dictionary holds student names as keys and their mid-term marks in the python course as values. Your function should get the student name corresponding to the minimum and maximum mark achieved by the student and return it to the function call. Then, finally prints the returned statement after the function call. Sample Input: {'Samin': 25, 'Lily': 28,'Akib': 17,'Salma': 22, 'Imon': 20 } Function Call: function_name({'Samin': 25, 'Lily': 28,'Akib': 17,'Salma': 22, 'Imon': 20 }) Sample Output: Highest scorer: Lily Lowest scorer: Akib Sample Input: {"A":60,"B":30,"P":2, "R":8, "S":33, "T":88} Function Call: function_name({"A":60,"B":30,"P":2, "R":8, "S":33, "T":88}) Sample Output: Highest scorer: T Lowest scorer: P
void dict_clear (dict_t* dict); This function clears the dictionary dict, destroying each pair key/value, but does not destroy dict itself (remember that dict was allocated using dict_create, so it will need to be freed at some point, but this is not this function’s job.) This is now the function that frees (destroys) a dictionary: void dict_destroy (dict_t* dict); This operates just as dict_clear, but in addition should free the memory that was allocated during dict_create. After a call to this function, if any other library function receives the pointer dict, the behavior is undefined (most likely, it will crash). This simple function returns the current size of the dictionary: size_t dict_size (const dict_t* dict);
python: def traditions_dict(adict): """ Question 6 Given a dictionary that maps a person to a list of their favorite traditions, return a dictionary with the value being the list sorted by the last letter of each tradition. If two traditions have the same last letter, sort by the first letter. HINT: This will require the use of lambda functions Args: adict (dict) Returns: dict >>> traditions_dict({"Jacob": ["The Horse", "Stealing the t", "Midnight Bud"], "Athena": ["Mini Five-Hundred", "Freshman Cake Race", "Buzzweiser Song"], "Liv": ["Freshman Cake Race", "George P. Burdell", "Buzzweiser Song"]}) {'Jacob': ['Midnight Bud', 'The Horse', 'Stealing the t'], 'Athena': ['Mini Five-Hundred', 'Freshman Cake Race', 'Buzzweiser Song'], 'Liv': ['Freshman Cake Race', 'Buzzweiser Song', 'George P. Burdell']} >>> traditions_dict({"Madison": ["The Horse", "Midnight Bud", "Buzzweiser…
PHP Write a reduce function Write a function reduce($arr, $func) that takes an array and a function as a parameter. The reduce function should apply the parameter function to each element of the array in succession to produce a single result. Note: the current result should always be the first parameter to the function and the next element of the array should always be the second parameter. You may not use the PHP function array_reduce in your solution. For example, the result of the following should be 10. function myMax($current, $new) { return $current < $new ? $new : $current; } $arr = array(10, 5, 3, 5, 1, 2, 5, 7, 4); print("Max: " . reduce($arr, 'myMax') .
Write the function print_stats_summary(stats_dict) that takes a dictionary where the keys are student names and the values are tuples containing the minimum, average, and maximum mark, respectively. The function should print the statistics for each student in the format show below. The students should be sorted by name and all the values should be printed to two decimal places. Notes: • You don't need to calculate the average, it is simply the second value in the tuple. For example if the tuple is (1, 10, 11) then the minimum mark is 1, the average is 10 and the maximum is 11. • There are two spaces at the start of each statistic line. For example: Test Result stats = ('Lee': (1.0, 10.0, 11.0), Aroha %3D "Aroha': (66.339, 76.339, 96.339), Minimum mark: 66.34 "'Zip': (56.481, 56.7665, 57.052)} Average mark: 76.34 print stats_summary(stats) Maximum mark: 96.34 Lee Minimum mark: 1.00 Average mark: 10.00 Maximum mark: 11.00 zip Minimum mark: 56.48 Average mark: 56.77 Maximum mark: 57.05