Create an interface messageencoder that has a single


Question: Create an interface MessageEncoder that has a single abstract method encode (plainText), where plainText is the message to be encoded. The method will return the encoded message.

Exercise: 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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Basic Computer Science: Create an interface messageencoder that has a single
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