A simple and very old method of sending secret messages is the substitution cipher. You might have used this cipher with your friends when you were a kid. Basically, each letter of the alphabet gets replaced by another letter of the alphabet. For example, every 'a' get replaced with an 'X', and every 'b' gets replaced with a 'Z', etc. Write a program thats ask a user to enter a secret message. Encrypt this message using the substitution cipher and display the encrypted message. Then decryped the encrypted message back to the original message. You may use the 2 strings below for your subsitition. For example, to encrypt you can replace the character at position n in alphabet with the character at position n in key. To decrypt you can replace the character at position n in key with the character at position n in alphabet. Have fun! And make the cipher stronger if you wish! Currently the cipher only substitutes letters - you could easily add digits, puncuation, whitespace and s forth. Also, currently the cipher always substitues a lowercase letter with an uppercase letter and vice-v This could also be improved. Remember, the less code you write the less code you have to test! Reuse existing functionality in libraries and in the std::string class!

Write a program that asks the user to enter 10 numbers, that range from 0-100. Make sure that you do not accept any numbers less than 0, if a user enters a number that is less than 0 then ask him again. Once the user enters all 10 numbers, find and print out the median.   How to calculate the Median The median is the middle score of a distribution. To calculate the median Arrange your numbers in numerical order. Count how many numbers you have. If you have an odd number, divide by 2 and round up to get the position of the median number. If you have an even number, divide by 2. Go to the number in that position and average it with the number in the next higher position to get the median. Consider this set of numbers: 5, 7, 9, 9, 11. Since you have an odd number of scores, the median would be 9. You have five numbers, so you divide 5 by 2 to get 2.5, and round up to 3 (to round numbers in C#, use Math.Round()). The number in the third position is the median.   In this case, the mean…

Write a program that creates a login name for a user, given the user's first name, last name, and a four-digit integer as input. Output the login name, which is made up of the first five letters of the last name, followed by the first letter of the first name, and then the last two digits of the number (use the % operator). If the last name has less than five letters, then use all letters of the last name. Ex: If the input is: Michael Jordan 1991 the output is: Your login name: JordaM91 Ex: If the input is: Kanye West 2024 the output is: Your login name: WestK24 367012.2549490.qx3zqy7 LAB 4.32.1: LAB: Login name 0/10 АCTIVITY LabProgram.java Load default template... 1 import java.util.Scanner; 2 3 public class LabProgram { 4 public static void main(String[] args) { 7 * Type your code here. 8 } 10 } 9.

Write a python program that takes a string as an input from the user. Then check which email domain the user is using and print it. For this question, assume you have only 4 email domains available and they are gmail, yahoo, outlook, and bracu. [You are NOT allowed to use split() and sting slicing for this task] Sample Input 1: tom@gmail.com Sample Output 1: The user is using gmail as a mailing domain. Explanation 1: Since gmail domain is being used by the user. Sample Input 2: kelvin@yahoo.com Sample Output 2: The user is using yahoo as a mailing domain. Explanation 2: Since yahoo domain is being used by the user. II

In python, write a program that receives an integer from the user, called n, and prints the first n prime numbers. For example, if the input is 7, the output should be: 2, 3, 5, 7, 11, 13, 17.

Write a program that asks the user to enter their name and a letter. The program should then use this information to output the string “<your name> guessed the letter <lowercase letter>”, where <your name> is the name entered by the user and <lowercaseletter> is the lowercase form of the letter entered by the user.tip: make use of the method .lower() Example:Enter your name: Jane DoeGuess a letter: AJane Doe guessed the letter a

Write a program that reads a string (password) and a number. The maximum number of attempts (3). The program with stop asking data if the word ‘quit’ is provided in the password value. If user provide correct credential the message access granted will be displayed otherwise the message access denied with be generated.

Make a program that prints the table of contents of a book where each chapter has the same number of sections, and each section has the same number of subsections. Example: Please enter the number of chapters 3Please enter the number of sections 3Please enter the number of subsections 3Chapter 1-Section 1.1--Subsection 1.1.1--Subsection 1.1.2--Subsection 1.1.3-Section 1.2--Subsection 1.2.1--Subsection 1.2.2--Subsection 1.2.3-Section 1.3--Subsection 1.3.1--Subsection 1.3.2--Subsection 1.3.3Chapter 2-Section 2.1--Subsection 2.1.1--Subsection 2.1.2--Subsection 2.1.3-Section 2.2--Subsection 2.2.1--Subsection 2.2.2--Subsection 2.2.3-Section 2.3--Subsection 2.3.1--Subsection 2.3.2--Subsection 2.3.3Chapter 3-Section 3.1--Subsection 3.1.1--Subsection 3.1.2--Subsection 3.1.3-Section 3.2--Subsection 3.2.1--Subsection 3.2.2--Subsection 3.2.3-Section 3.3--Subsection 3.3.1--Subsection 3.3.2--Subsection 3.3.3

Write a program that creates a login name for a user, given the user's first name, last name, and a four-digit integer as input. Output the login name, which is made up of the first five letters of the last name, followed by the first letter of the first name, and then the last two digits of the number (use the % operator). If the last name has less than five letters, then use all letters of the last name. Hint: Use the to_string() function to convert numerical data to a string.

Write a program that removes all non-alphabetic characters from the given input. Ex: If the input is: -Hello, 1 world$! the output is: Helloworld The program must define and call the following method that takes a string as a parameter and returns the string without any non- alphabetic characters. public static String removeNonAlpha (String userString)