CPS 180 – Programming Assignment #5 Assigned: 05/31/17 Due: 06/07/17 Points: 40

Question

CPS 180 – Programming Assignment #5

Assigned: 05/31/17       Due: 06/07/17         Points: 40

Purpose: Use math functions, string manipulation and input/output to create an alternative to Twitter called Chipper.

Requirements:

Ask the user for 3 messages to send using the following characteristics:

Generate a random number to ask the user for a # of chars for the message. The random number should be between 1 and 50. Use Math.random to generate 3 numbers: rand1, rand2, rand3

Have the user type the strings into 3 separate variables

Find the length of the string and report if the string is too long, then truncate it and reassign it to the string

String variables: Keep track of all three messages in msg1, msg2, msg3 strings. Also combine (concatenate) all 3 messages into 1 string called msgAll

int variables: Keep track of the lengths of all three messages (after truncating) in msg1Length, msg2Length, msg3Length

Counters:

Count and report the total # of characters in msgAll.

Count and report the number of vowels in msgAll (this will require a loop).

Count and report the number of spaces in msgAll (this will require a loop).

Display msgAll backwards (this will require a loop).

Display msgAll Vertically (one char per line).

Sample Output (user input in bold): Note: The output is incomplete, just use as a reference.

Message #1: Enter a message with 18 chars or less:

This is a message to you!

Oops! Your message has more than 18 characters! It has been truncated to:

This is a message

Message #2: Enter a message with 40 chars or less:

…. Message ….

Message #3: Enter a message with 28 chars or less:

…. Message ….

Here is message 1: … Message …

Here is message 2: … Message …

Here is message 3: … Message …

Here are your three messages combined:

This is a message … Message … … Message …

Here are your messages in all uppercase:

THIS IS A MESSAGE … MESSAGE … … MESSAGE …

Here are your messages in all lowercase:

this is a message … message … … message …

The count of characters in all of your messages: 99

The number of vowels in all of your messages: 10

The number of spaces in all of your messages: 8

Here is your message backwards: xxxxxya aaks ss kdkl3

Here is your message vertical:

T

H

I

S

I

S

…

Explanation / Answer

import java.util.Scanner;

public class Chipper {

   public static void main(String[] args) {

       int range = (50 - 1) + 1; // 50 is max value 1 is min value

       int rand1 = (int) (Math.random() * range) + 1;// 1.a)gives a random
                                                       // number between 1 and
                                                       // 50
       int rand2 = (int) (Math.random() * range) + 1;
       int rand3 = (int) (Math.random() * range) + 1;

       String msg1 = null;// 1.b) all strings in three input variables
       String msg2 = null;
       String msg3 = null;
       Scanner in = new Scanner(System.in);
       System.out.println("Enter a message with " + rand1 + " character or less");
       msg1 = in.nextLine();
       if (msg1.length() > rand1) {
           System.out.println("Oops! youe message is more than " + rand1 + " characters! it has been truncated to:");
           msg1 = msg1.substring(0, rand1);// 1.c) truncate string if
                                           // length is more than random
                                           // variable
           System.out.println(msg1);
       }
       System.out.println("Enter a message with " + rand2 + " character or less");
       msg2 = in.nextLine();
       if (msg2.length() > rand2) {
           System.out.println("Oops! youe message is more than " + rand2 + " characters! it has been truncated to:");
           msg2 = msg2.substring(0, rand2);
           System.out.println(msg2);
       }
       System.out.println("Enter a message with " + rand3 + " character or less");
       msg3 = in.nextLine();
       if (msg3.length() > rand3) {
           System.out.println("Oops! youe message is more than " + rand3 + " characters! it has been truncated to:");
           msg3 = msg3.substring(0, rand3);
           System.out.println(msg3);
       }
       System.out.println("Here is message1: " + msg1);
       System.out.println("Here is message2: " + msg2);
       System.out.println("Here is message3: " + msg3);

       String msgAll = msg1.concat(msg2).concat(msg3);// 2.Concatenate all
                                                       // string in one
       System.out.println("Here are your three messages combined: ");
       System.out.println(msgAll);
       System.out.println("Here are your messages in all uppercase: ");
       System.out.println(msgAll.toUpperCase());
       System.out.println("Here are your messages in all lowercase: ");
       System.out.println(msgAll.toLowerCase());
       int msg1Length = msg1.length();// 3.keeps the track of lengths of all
                                       // three messages
       int msg2Length = msg2.length();
       int msg3Length = msg3.length();

       // 4. a) count the total no of characters in string b) vowel count
       // c)space count
       int charCount = 0;
       int spaceCount = 0;

       int vowelCount = 0;
       char temp;

       for (int i = 0; i < msgAll.length(); i++) {
           temp = msgAll.charAt(i);

           if (temp != ' ')
               charCount++;// counts character in string
           if (temp == ' ')
               spaceCount++;// count space in string
           if ((temp == 'a') || (temp == 'e') || (temp == 'i') || (temp == 'o') || (temp == 'u'))
               vowelCount++;// counts vowels in string
       }
       System.out.println("The count of character in all your messages: " + charCount);
       System.out.println("The numbers of vowels in all your messages: " + vowelCount);
       System.out.println("The number of spaces in all your messages: " + spaceCount);
       String backwardString = "";
       for (int i = msgAll.length() - 1; i >= 0; i--) {
           backwardString = backwardString + msgAll.charAt(i);// 5. backward
                                                               // the string
                                                               // msgAll
       }
       System.out.println("Here is your message backwards: " + backwardString);
       System.out.println("Here is your message vertical: ");
       for (int i = 0; i < msgAll.length(); i++) {
           System.out.println(msgAll.toUpperCase().charAt(i));
       }
   }

}

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