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Please answer all 4 tasks including Demo. Task Description: a aor .breanstkanyahay oscarn only the top one from the pile. You cannot remove a book

Please answer all 4 tasks including Demo.

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Task Description: a aor .breanstkanyahay oscarn only the top one from the pile. You cannot remove a book from under another one. Likewise, you cannot add a book beneath another one. You can add another book to the pile only by placing it on the top of the pile. If you represent books by their titles alone, design a class that you can use to track the books in the pile on your desk. Specify each operation by stating its purpose, by describing its parameters, and by writing a pseudocode version of its header. Then write a Java interface for the pile's methods. Please follow the code examples in our lecture slides to comment your code Task 2: Define a class PileOfBooks that implements the interface described in Task 1. Usea resizable array in your implementation. Then write a program that adequately demonstrates your implementation Task 3: Repeat Task 2, but use a chain of linked nodes instead of an array. Task 4: Using Big Oh notation, indicate the time complexity of each method defined (in Task2 and Task 3) in the best case and the worst case. Please provide explanations for your answers

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