8. Name and Email Addresses Write a program that keeps names and email addresses in a dictionary as key-value pairs. The program should display a menu that lets the user look up a person’s email address, add a new name and email address, change an existing email address, and delete an existing name and email address. The program should pickle the dictionary and save it to a file when the user exits the program. Each time the program starts, it should retrieve the dictionary from the file and unpickle it.

Q: Create a program that asks the user to enter (n) the number of elements that will b in the list. The…

A: Note- since programming language is not mentioned so we are providing answer in python programming.…

Q: All code in JAVASCRIPT Write a program that creates two files with the names file4 and file4a  two…

A: the program is given below:-

Q: Create a local variable named buffer that will hold a 20-byte array and then declare it.

A: Since programming language is not mentioned, we are providing answer in java

Q: A Personal Fitness Tracker is a wearable device that tracks your physical activity, calories burned,…

A: The question asks you to create a Python program that reads a file ("steps.txt") containing the…

Q: Palindrome Checker create a JavaScript program that checks if phrases entered by the user are…

A: In this question we have to write a JavaScript code for the plaindrome check  Let's code and hope…

Q: Code the following directions in python: 1.Write a statement that creates a dictionary containing…

A: A dictionary is an unordered collection of key-value pairs in Python that is used to store and…

Q: Computer Science You need to create a small database that stores the information of 5 students. It…

A: Please find the code below

Q: dict = {    'a': [1,2,3,4]    'b': [3,6,7,8]    'c': [9,1,9,1] { Iterate over the above dictionary…

A: Please refer below code and output for refrence: Every line is commented : dict = {   'a':…

Q: Data structures concatenate_dict(dict_list:list)->dict This function will be given a single…

A: Here is the explanation: 1)Take the list of dictionary as the input . Iterate over the list of…

Q: use Python Please follow the instructions :)

A: I have provided   PYTHON  CODE  along  with  CODE  SCREENSHOT and  OUTPUT…

Q: Dictionary Swap Write a function called dictionary_swap that takes a dictionary as a parameter. It…

A: Given: Dictionary Swap Write a function called dictionary_swap that takes a dictionary as a…

Q: Create a hand of cards using python code: - 52 cards are in the deck To create a hand of cards,…

A: Note: Follow proper indentation while executing the program. Steps followed to implement the…

Q: Dictionaries: Given the following dictionary definitions: Foo = {1:’B’, 2:’D’, 3:’C’, 4:’A’} Bar =…

A: Code: Foo = {1:'B', 2:'D', 3:'C', 4:'A'} Bar = {'A':3,'B':1,'C':2,'D':4} print (Foo[Bar['A']])print…

Q: n this assignment you are asked to build a simple application to keep track of ca puild a "Car"…

A: I have answered below:

Q: PYTHON Language Programming    Write a program that asks user for state name in a text document…

A: Given: Write a program that asks user for state name in a text document "state.txt"   Please eneter…

Q: Chapter 7 - Programming Challenge 15 15. World Series Champions If you have downloaded this book’s…

A: Read the contents of the file "WorldSeriesWinners.txt" and store them in an array.Ask the user to…

Q: Search Benchmarks Design an application in pseudocode that has an array of at least 20 integers. It…

A: - We need to give pseudocode for a application with array, function and search algorihtms.

Q: File Encryption and Decryption Write a program that uses a dictionary to assign “codes” to each…

A: The code has given

Q: Exercise: Least Dictionary Value Description In this exercise you will find the value in a…

A: Algorithm: Step 1: StartStep 2: Define a function least_value which takes in a dictionary as a…

Q: Attached Files:  getRandomLib.h: // This library provides a few helpful functions to return…

A: Program Instructions:Include the necessary header files.Print hello message and as for a…

Q: s are yellow limes are green then the list ["red", "yellow", "green"] s

A: def last_words(fname):    """returns a list containing the last word from each line of the file."""…

Q: Assume the variable de finitions references a dictionary. Write an if statement that determines…

A: A dictionary is a Python container that maintains mappings of unique keys to values in an unordered…

Q: Using Python, write a program which opens a text file and loads the data into a dictionary where the…

A: Introduction : Here I am give step by step solution of the given problem . TextFile.txt

Q: Please help me with this using java. Create a selection sort java code Please also comment the code

A: The answer of this question is as follows:

Q: Here you will be writing a program to maintain the student database. Your program will maintain the…

A: #Menu Structure Program  for a Student database #Five arrays to store name, ID, Score1, Score2 and…

Q: The python function first_words takes one parameter, fname, the name of a text file, and returns a…

A: Python : Python is frequently used to create websites and applications, automate tasks, analyse…

Q: Program: Python Create a free choice game using a PYTHON DICTIONARY Make the game original yet…

A: We will build the quiz game where we use a dictionary to hold countries and their capitals. Using…

Operations of Linked List

A linked lists are one of the most widely used and effective data structures, with applications in every programming language, including C, C++, Python, Java, and C#.