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4. Write a Java program to input 10 numbers and print the sum of all the even numbers and product of all the numbers ending with 4.
5. The management of a shopping mall decided to give the following discount on the purchase amount of the customers during a
festival season.
Purchase Amount Discount%
Up to ` 2000 2.5%
` 2001 to ` 4000 4%
` 4001 to ` 7000 7%
More than ` 7000 10%
Write a Java program to input the Customer Name and Purchase Amount and calculate the discount he would receive. Also, print
the customer name and discounted amount.
6. Write a Java program to input the name, the consumer number and the number of calls made by the consumer. Print the amount
that is to be paid based on the following criteria:
No. of calls Rate/call
More than 250 calls 5/-
150 to 249 calls 4/-
75 to 149 calls 3/-
Less than 75 calls 2/-
Also, a surcharge of 2.5% on the bill amount is to be paid by the consumer.
Display the output in the following pattern:
Name of consumer: ______________
Consumer Number: ______________
Number of calls: ____________
Bill amount before surcharge added: ________
Bill amount with surcharge: ____________
7. An electronics shop has announced the following seasonal discounts on the purchase of certain items:
Purchase amount in ` Discount on Laptop Discount on Desktop PC
0 – 25000 0.0% 5.0%
25001 – 57000 5.0% 7.6%
57001 – 100000 7.5% 10%
More than 100000 10.0% 15.0%
Write a Java program based on the above criteria to input the name, address, amount of purchase and the type of purchase (L for
Laptop and D for Desktop) by a customer. Compute and print the net amount to be paid by a customer along with his name and
address.
[Hint: Discount = (discount rate/100) * amount of purchase; Net amount = amount of purchase – discount]
8. Write a menu-driven class in Java to accept a number from the user and check whether it is a neon number or a palindrome number.
[Hint: (a) A number is a neon number whose sum of the square is equal to the number itself, e.g., 9 (square of 9 = 81 = 8+1 = 9). (b) A
number is a palindrome number that when read in reverse order is the same as read in the right order, e.g., 44, 404, 1221, etc.]
9. Write a menu-driven program in Java to accept the choice from the user to do the following:
(a) accept a number and check whether it is an Automorphic number or not
(b) accept any two numbers and print their GCD.
[Hint: (a) An Automorphic number is a number whose square “ends” in the same digits as the number itself, e.g., 5*5 = 25, 6*6 = 36,
25*25 = 625.
(b) GCD (Greatest Common Divisor) of two integers is calculated by the continued division method. Divide the larger number by
the smaller; the remainder then divides the previous divisor. The process is repeated until the remainder is zero. The divisor
then results in the GCD.]
10. Write a Java program to print the following using a switch case.
a. ***** b. *
**** * *
*** * * *
*** * * * *
** * * * * *
* * * * *
* * *
* *
*
212212 Touchpad Computer Science-XI

