<p>Lab #9 (10 points) Due: Thursday, May 4</p><p>1. Write a program that reads in a sentence, then prints it out in reverse order. For example, the program should display uoy evol I for the input: I love you Your class should include 3 methods:  obtain, which reads the original sentence  report, which prints out the reverse  main, which tests the other two methods 2. Add a method that displays the characters in the input sentence (including spaces) as their numeric ASCII values. For example, the input “I love you” would produce the output:</p><p>73 32 108 111 118 101 32 121 111 117</p><p>Modify your main method so that it tests your new display method (don’t replace the old one!). 3. Add one more method, which implements a Caesar cipher on your text. The Caesar cipher works by shifting each letter of the text N positions up in the alphabet, where N is some integer. The example below shows the uppercase letters of the English alphabet shifted 5 positions:  original: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  enciphered: F G H I J K L M N O P Q R S T U V W X Y Z A B C D E Note that the alphabet "wraps around" once it reaches the end – thus, V maps to A, W maps to B, and so forth. The message "I LOVE YOU" enciphered in this fashion would be: N QTAJ DTZ You method should:  prompt the user for N  Display the message with each letter shifted N positions; keep the spaces and the case intact – this means that you will have to be sure that both versions of the alphabet wrap appropriately. 4. Modify your main method so that it contains a loop that:  Displays a menu describing the three encryption options and a quit option  If the user chooses an option other than quit, prompts for an input String and calls the appropriate method  Continues this process until the user chooses to quit.</p><p>Turn in a printout of your source code (with your name on it!).</p><p>Computer Science I Spring 2006 Sheller Page 1 cs1s06lab9(charstrings) - work</p>