Note: Submission of this project with a passing score is a requisite for continu

Question

Note: Submission of this project with a passing score is a requisite for continuing with the course.

There is no grace period for this project. Please submit by the deadline.

You are a programming intern at the linguistics department and your boss has come to ask for

your help with a simple task. She would like you to write a simple program that analyzes some text and

outputs the frequency of its letters.

You will write a program, Project1.java, which repeatedly asks the user for input until the user

enters “DONE” and then outputs a chart showing the relative frequencies of the letters a-z and the letter

with the highest frequency. Capital letters A-Z are treated as if they were lower case letters. Any other

characters are ignored. Frequencies are rounded to the nearest integer (e.g.: 3.333 % becomes 3 % and

3.666 % becomes 4 %). The chart and output of your program should be exactly as shown in the sample runs below:

Enter text at the prompt to calculate letter frequencies. Enter DONE when finished with text input.

Enter a line of text: Frequency analysis is cool.

Enter a line of text: If you use it on long text you can discover some interesting things.

Enter a line of text: Try it out!

Enter a line of text: DONE

A total of 86 letters of the alphabet were processed.

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   %

*     * * * * * * *      * * * *     * * * * * *      *         1

                                . . .

                        *              *            *                     10

The most common letter is i with a frequency of 10 %.

Explanation / Answer

import java.lang.reflect.Array;
import java.util.Scanner;

public class Project1 {
  
   public static void main(String str[])
   {
       //DECLARE ARRAY
       int[] arr=new int[26];
       int freq=0; //DECLARE FREQ VARIABLE
       for(int i=0;i<26;i++) //INITIALIZE ARRAY TO 0
           arr[i]=0;
      
       int count=0; //DECLARE AND DEFINE COUNT TO 0
       String s1=new String("");
       String s2=new String("");
       Scanner input;
       input = new Scanner ( System.in ); //SCANNER VARIABLE
System.out.println("Enter text at the prompt to calculate letter frequencies. Enter DONE when finished with text input.");
do //DO WHILE LOOP
{
   System.out.print("Enter a line of text:");
   s1=input.nextLine();
   s2=s2.concat(s1);
     
}while(!(s1.equals("DONE")));
  
s2=s2.substring(0, s2.length()-4);
s2=s2.toLowerCase();
for(int i=0;i<s2.length();i++)
{
   if(s2.charAt(i)>=97 && s2.charAt(i)<=122)
   {
               count++;
               arr[s2.charAt(i)-97]++;
   }      
}
System.out.println("A total of "+ count+ " letters of the alphabet were processed.");
for(int i=0;i<26;i++)
{
   arr[i]=Math.round(100*arr[i]/count);
}
freq=arr[0];
for(int i=1;i<26;i++)
{
   if(freq<arr[i])
       freq=arr[i];
}
System.out.println("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");
System.out.println("The most common letter is with a frequency of "+ freq+"%");

  
   }

}

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