Question

Methods:

Net beans IDE Java two methods.

Identifier:	calculateScore(String word)
Parameters:	word – the word for which you should calculate the points in Scrabble
Return Value:	int – the number of points for the parameter word
Other:	This method should be static. This method should use the following system for scoring: 0 – blank 1 – e, a, i, o, n, r, t, l, s, u 2 – d, g 3 – b, c, m, p 4 – f, h, v, w, y 5 – k 8 – j, x 10 – q, z You should represent blank tiles by using the space character (i.e., “ ”) If the parameter word is null or contains any characters that are not letters or a space, it should return the value -1 to indicate that the input was invalid. This method should be able to handle input that is lowercase, uppercase, or a mixture of both.
Identifier:	displayMenu(String message, int min, int max)
Parameters:	message – The menu text that should be displayed min – The minimum allowable menu option max – The maximum allowable menu option
Return Value:	int – The choice selected by the user
Other:	This method should be static. When this method is called, it will display the String parameter which is the menu text which should include the possible selections. This method should then prompt the user to make a selection and perform value and type-safe user input checking until a user has made a valid selection. If the user does not enter an int value, they should be told “Please enter a number between $min and $max” where $min and $max are the values of the parameters min and max.

Answer 1

(a)

// Program in Java with required function calculateScore

// Parent Class
public class Calculate {
// main function to call the calculateScore function
public static void main (String[] args)
{
// print the value returned by calculateScore method
System.out.printf("The score of entered sting \"Shubham Batham\" is: %d\n", calculateScore("Shubham Batham"));
}
  
//static method calculateScore to calculate the score of the word passed as a parameter
static int calculateScore(String word)
{
// convert the word to lower case
word = word.toLowerCase();
// initialize the score to zero
int score = 0;
// iterate over each character
for(int i=0; i<word.length(); i++)
{
// get each character in a character variable
char character = word.charAt(i);
// use switch to calculate the value of the word
switch(character)
{
case ' ' : break;
case 'e' :
case 'a' :
case 'i' :
case 'o' :
case 'n' :
case 'r' :
case 't' :
case 'l' :
case 's' :
case 'u' : {score++; break;}
case 'd' :
case 'g' : {score+=2; break;}
case 'b' :
case 'c' :
case 'm' :
case 'p' : {score+=3; break;}
case 'f' :
case 'h' :
case 'v' :
case 'w' :
case 'y' : {score+=4; break;}
case 'k' : {score+=5; break;}
case 'j' :
case 'x' : {score+=8; break;}
case 'q' :
case 'z' : {score+=10; break;}
default : break;
}
}
// return the score from the function
return score;
}
}

// Output

The score of entered sting "Shubham Batham" is: 30

// Screenshot of Code, input & Output (for reference to indentation)

(b)

// Program in Java with required function displayMenu   
import java.util.Scanner; //for scanner to get input from the user

// Parent Class
public class Calculate {
// main function to call the displayMenu function
public static void main (String[] args)
{

// menu string to store the menu
String menu = "\n\t\t-----MENU-----\n\t1.Choice 1\n\t2.Choice 2\n\t"
+ "3.Choice 3\n\t4.Choice 4\n\t5.Choice 5\n\t6.Choice 6\n\tEnter choice: ";
// call the displayMenu function and display the choice
System.out.printf("Entered choice is: %d\n", displayMenu(menu,1,6));
}

// static function displayMenu that takes the menu , minimum choice & maximum choice as parameters // and returns the choice entered by the user after checking the choice value internally
static int displayMenu(String message, int min, int max)
{
// scanner object to get the user input
Scanner sc = new Scanner(System.in);
// variable to store the input
int input;
// display the menu
System.out.print(message);
// get user input
input = sc.nextInt();
//check for correct input
while(input < min || input > max)
{
// display error prompt for wrong input
System.out.printf("Please enter a number between %d and %d\n", min , max);
// display menu again
System.out.print(message);
// get input again
input = sc.nextInt();
}
//return the choice of the user
return input;
}

}

// Output

       -----MENU-----
   1.Choice 1
   2.Choice 2
   3.Choice 3
   4.Choice 4
   5.Choice 5
   6.Choice 6
   Enter choice: 8
Please enter a number between 1 and 6

       -----MENU-----
   1.Choice 1
   2.Choice 2
   3.Choice 3
   4.Choice 4
   5.Choice 5
   6.Choice 6
   Enter choice: 4
Entered choice is: 4

// Screenshot of Output, Input & Code (for reference to indentation)