Question

please help

Create a program that prompts the user for a sentence and then displays the hash of the sentence. Refer to the textbook Chapter 5.2 and the Support Video in zyBook section 3.1 for more instruction on hashing.

Program Requirements:

The program should prompt the user for the "sentence" to be hashed and then compute the hash of the sentence by summing the numeric value of each letter in the sentence (use A=a=1, B=b=2 ... Z=z=26, space=31) and applying the hash function f(n) = sum mod 31.  Repeat the prompt and computation until the user enters a sentinel value to quit.

For example:

If the user enters:	the hash is:
hello	21
pooh bear	18
We the People of the United States in Order to form a more perfect Union	27

• The sentence may be as small as a single word or contain multiple words
• The sentence can contain upper case and lower case letter but no numbers or symbols.
• Provide some test cases <test values> I should key in along with the expected outcome of the provided values. Review the Developing Test Cases document in the Getting Started module for some examples of how to create/format test cases.
• Don't use my examples as your test cases...

Answer 1

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import java.util.*;

public class Main {

public static void main(String[] args) {

int sum = 0;

Scanner sc = new Scanner(System.in);

System.out.print("Enter data or (quit) to stop: ");

String str;

str = sc.nextLine();

while(!str.equals("quit")){

sum = 0;

str = str.toLowerCase();

for(int i=0 ; i<str.length(); ++i){

if(str.charAt(i)==' ')

sum = sum + 31;

else

sum = sum + (str.charAt(i) - 'a' ) + 1;

}

System.out.println(sum%31);

System.out.print("Enter data or (quit) to stop: ");

str = sc.nextLine();

}

System.out.print("\n......Exiting.......");

}

}

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