Create a program (in Java or Python) to encrypt and decrypt messages using the Shift Cipher. Your program should behave as following: Ask the user if they want to encrypt or decrypt a message or quit the program. Ask the user for the key Ask the user for the message Print out the encrypted or decrypted message. Go back to step 1.

Write a program on python that simulates the toss of a six sides die. What is the ratio of the number 2 with the other sides?. Assume that each side has equal probability to appear when a die is tossed.

Write a Java program that allows the user to enter the expenses’ in term of AED by using a while loop to calculate the average. The number of expenses is unknown. To stop entering the expenses, the user needs to enter a negative value. Show the total, average and the count.

Write a program to handle a user's rolodex entries. (A rolodex is a system with tagged cards each representing a contact. It would contain a name, address, and phone number. In this day and age, it would probably have an email address as well.) Typical operations people want to do to a rolodex entry are: 1) Add entry 2) Edit entry 3) Delete entry 4) Find entry 5) Print all entries 6) Quit You can decide what the maximum number of rolodex entries is and how long each part of an entry is (name, address, etc.). When they choose to edit an entry, give them the option of selecting from the current rolodex entries or returning to the main menu — don't force them to edit someone just because they chose that option. Similarly for deleting an entry. Also don't forget that when deleting an entry, you must move all following entries down to fill in the gap. If they want to add an entry and the rolodex is full, offer them the choice to return to the main menu or select a person to overwrite. When…

Write Java class Message that automatically gives each created Message object a unique serial number, starting at 1 for the first message. (Hint: static)

Write a Java program that reads a tic-tac-toe board and determines who has won the game or if it is a tie. You may assume that the game is over.   Input X - O - X O O - X   Output X wins   Input O X O X O X X O X   Output Tie