Question: JAVA Exercise 12 Define an operation public ArrayList ancestors (E item) that returns the list of all the an- cestors of item. For example, in

JAVA Exercise 12 Define an operation public ArrayList ancestors (E item)

JAVA

Exercise 12 Define an operation public ArrayList ancestors (E item) that returns the list of all the an- cestors of item. For example, in the tree (a) of Exercise 1, given 5, it should return [7,1,3]. If the item is not in the tree, then an exception NoSuchElementException should be thrown. Exercise 13 Define an operation public ArrayList

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