Consider the two private methods described in the previous exercise.
a. The method isTooBig requires the size of the array to be greater than 20. What problem could occur if this requirement is dropped?
b. The method reduceArray is not analogous to the method ensureCapacity in that it does not reduce the size of the array by one half. What problem could occur if the size of the array is reduced by one half instead of three quarters?
Define the method union, as described in Exercise 5 of the previous chapter, for the class ResizableArrayBag.
Exercise 5- An instance of the class ArrayBag has a fixed size, whereas an instance of ResizableArrayBag does not. Give some examples of situations where a bag would be appropriate if its size is
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