Use java program

Note i need to understand how to write the code without using array only by using switch case

And you can take any alphabets to make me understand how to write the code

Declare Seven integer variables Using the value X,Y,Z,A,B,C,D.

X = Sum of 6 and alphabetic order of the 1st letter of your last name

Y = Sum of 12 and alphabetic order of the 2nd letter of your last name

Z = sum of 4 alphabetic order of the 3rd letter of your last name

A = alphabetic order of the 1st letter of your first name

B = multiplication of 2 and alphabetic order of the 2nd letter of your first name

C = alphabetic order of the 3rd letter of your first name

D = sum of alphabetic order of the 3rd letter of your first name and

3rd letter of your last name.

Now check the given conditions for all the values:

If the value is within the range of 4-8

print "Bangladesh."

If the value is within the range of 9-12

print "DHAKA."

If the value is within the range of 21-25

print "CHITTAGONG"

Otherwise, print "Out of Range."

Note: Use Switch..Case to solve this problem.