Question: Define DiscountPolicy as an interface instead of the abstract class described in Exercise 10. Exercise 10. Create an abstract class DiscountPolicy. It should have a

Define DiscountPolicy as an interface instead of the abstract class described in Exercise 10.

Exercise 10.

Create an abstract class DiscountPolicy. It should have a single abstract method computeDiscount that will return the discount for the purchase of a given number of a single item. The method has two parameters, count and itemCost.

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