Method exercises with input parameters, return values and test cases:

Create one new project to hold all of these. Create all of the methods in one WorkIt class. Create another TestIt class to test each of the methods. Every problem should have at least one method in the WorkIt class and another method in the TestIt class. When you are done, hook all your test methods together.

1. profitOnOneSale

Input parameters:
	Double	Price
	Double	Cost
Description of processing: The profit is the price minus the cost.
Return:
	Double	Profit

2. profitOnManySales

Input parameters:
	Double	Price
	Double	Cost
	Int	Quantity sold
Description of processing: The profit is the price minus the cost. Multiply that times the quantity sold for the total profit.
Return:
	Double	Profit

3. oneName

Input parameters:
	String	First
	String	Last
Description of processing: The full name is the first name plus a space plus the last name
Return:
	String	Full name

4. smallNumber

Input parameters:
	double	Number to test
Description of processing: If the number is greater than 20, return true; otherwise return false.
Return:
	boolean	True if greater than 20

5. charsToWord

Input parameters:
	char	Any character
	char	Any character
	char	Any character
Description of processing: Put the 3 characters together into one string. Do not put any spaces between them.
Return:
	String	String of the 3 given characters

5. productMinusTenPercent

Input parameters:
	int	First number - int
	int	Second number - an int
Description of processing: Multiply the two numbers and then reduce that number by 10%
Return:
	double	Result of first * second minus 10% of total.

6. discountPlusTax

Input parameters:
	double	Original price
	double	Discount % (without the % sign), so 15% would be .15
	double	Tax % (without the % sign), so 15% would be .15
Description of processing: Multiply the original price by the discount% to find the discount amount. Subtract the discount amount from the original price to find the discounted price. Multiply the discounted price by the tax rate to find the tax amount, and add that to the discounted price.
Return:
	double	Discounted price plus tax

7. quantityPricing

Input parameters:
	double	Base Price
	int	Quantity sold
Description of processing: When the quantity sold is greater than 100, give a 10% discount. When the quantity sold is greater than 300, give a 30% discount. When the quantity sold is greater than 500, give a 50% discount. There is no discount for 100 and below.
Return:
	double	Discounted price for one item.

8. quantityPricingByGroup

Input parameters:
	double	Base Price
	char	Group
	int	Quantity sold
Description of processing: When the group is 'A', give a 5% discount only. When the group is 'B', give only the quantity discount described in QuantityPricing. You should actually call that method. When the group is 'C', give no discount. When the group is 'D', give a 5% discount, and then give the quantity discount described in QuantityPricing on top of that 5%. You should actually call that method.
Return:
	double	Discounted price for one item.

9. loopAddUp

Input parameters:
	int	Number to count
Description of processing: Starting at 1, keep adding the numbers until you reach the number to count.
Return:
	double	Sum of all the numbers up to the "Number to Count"

10. loopExponent

Input parameters:
	double	Any number
	int	Power to raise
Description of processing: Multiply the number as many times as the power to raise it to. If the power is one, return 1. If the power is negative, take the reciprocal (which is 1 over the result).
Return:
	double	Number raised to that power

EXTRA: Recursion

11. loopAddUpRecursion

Input parameters:
	int	Number to count
Description of processing: Starting at 1, keep adding the numbers until you reach the number to count. But do not use a for loop. Use recursion instead.
Return:
	double	Sum of all the numbers up to the "Number to Count"

12. loopExponentRecursion

Input parameters:
	double	Any number
	int	Power to raise
Description of processing: Multiply the number as many times as the power to raise it to. If the power is one, return 1. If the power is negative, take the reciprocal (which is 1 over the result). But do not use a for loop. Use recursion instead.
Return:
	Double	Number raised to that power