check all the answer is correct or not

Individual Assignment

Weightage: $80\%,100$ marks

Introduction to Computer Science $-$ Part $1(50$ marks$)$

Construct a solution algorithm for the following problems. Your solution should contain:

$$ A defining problem

$$ A pseudo code algorithm

$$ A desk check of the algorithm

$$ Three test cases for each question. Two valid and one error test case

Question $1$

The Next$-$Day Delivery Service Provider provides the parcel delivery service within Singapore. The delivery charge is calculated based parcel weight shown below in the table,

Weight

Charge

Less than $3$ kg

$$8\mathrm{.}00$

$3-5$ kg

$$12\mathrm{.}00$

For each additional $1$ kg $($Max of $25$ kg$)$

$$1\mathrm{.}50$

Design an algorithm that will prompt for, receive the parcel weight, calculate the delivery charge and print the value. The program is to repeat the processing until a sentinel weight of $0$ is entered.

Question $2$

If you buy a property, you must pay the Buyer's Stamp Duty $($BSD$).$ It is calculated by multiplying the purchase price of the property with the stamp duty rate based on either residential or non$-$residential property as shown below in the table. Purchase Price of the Property BSD Rates for Residential Properties BSD Rates for Non$-$Residential Properties Less than $$180,0001\%$

$1\mathrm{.}5\%$ $$180,000-$ $$600,0002\%$

$2\mathrm{.}5\%$ Above $$600,0003\%$

$3\mathrm{.}5\%$

For example, if the purchase price of a non$-$residential property is $$500,000,$ the BSD would be $$500,000$ x $2\mathrm{.}5\%=$ $$12,500.$

Design an algorithm that will prompt for and receive the purchase price of a property and property type $($residential or non$-$residential$)$ and calculate the buyer$$s stamp duty and print the value.

Question $3$

There is a mid$-$year bonus scheme in a sales organisation based on the sales performance for the first half of the year and only payout if the sales performance is on target or more $(100\%$ or more$).$ The mid$-$year bonus is computed using the formula below,

Employees$$ salary details are maintained in a file that contains employee ID$,$ employee name and employee salary. Design an algorithm that will prompt for and receive the sale performance in percentage and compute the mid$-$year bonus for each employee in the file and print the employee ID$,$ employee name and bonus.

Introduction to Computer Science $-$ Part $2(50$ marks$)$

Implement the three questions algorithm in Part $1$ into Java programming. Your code should contain appropriate validations and must focus on code optimisation.

You need to submit:

$$ Three Java code

$$ For each question explain $(100-150$ words$)$ how the logic works.

$$ Three sample output screenshots

o Two normal and one error test cases

Mid $-$Year BonusYear Bonus

Employee

Employee$$s Salarys Salary

Sale Performance $(\%)$

Sale Performance $(\%)$

$200$

$200$

X

$=$ in put output process

total company sales

Question $1$:

Input Processing Output

parcel$\_$weight Prompt for parcel$\_$weight

Get parcel$\_$weight

Check if weight is $0($exit condition$)$

Adjust weight $($ceil if $>5,$ max $25$ kg$)$

Calculate delivery$\_$charge

Display delivery$\_$charge delivery$\_$charge

A pseudo code algorithm

$1.$ BEGIN

$2.$ FUNCTION main$()$

$3.$ CREATE scanner for input

$4.$ WHILE true DO

$5.$ PROMPT "Enter parcel weight in kg $(0$ to exit$)$: $"$

$6.$ TRY

$7.$ READ weight

$8.$ IF weight $<0$ THEN PRINT "Invalid weight. Please enter a positive number." CONTINUE

$9.$ CATCH InputMismatchException

$10.$ PRINT "Please enter a valid number." CLEAR input

$11.$ IF weight $==0$ THEN PRINT "Exiting program..." EXIT loop

$12.$ IF weight $>5$ THEN weight $=$ ceiling$($weight$)$

$13.$ IF weight $>25$ THEN weight $=25$ PRINT "Weight adjusted."

$14.$ deliveryCharge $=$ calculateDeliveryCharge$($weight$)$

$15.$ PRINT "Delivery charge: $$"+$ deliveryCharge

$16.$ ENDWHILE

$17.$ CLOSE scanner

$18.$ END FUNCTION

$19.$ FUNCTION calculateDeliveryCharge$($weight$)$

$20.$ IF weight $<3$ THEN RETURN $8\mathrm{.}00$ ELSE IF weight $<=5$ THEN RETURN $12\mathrm{.}00$ ELSE RETURN $12\mathrm{.}00+($weight $-5)*1\mathrm{.}50$

$21.$ END FUNCTION

$22.$ END

A desk check of the algorithm

Desk Check

Input: $2$kg$,4$kg$,-1$kg

Data Set $1$ Data Set $2$ Data Set $3($ invalid$)$

Parcel$\_$weight $2$kg $4$kg $-1$

Expected Results

Data Set $1$ D