Please answer the following questions and make sure to have the answers as detailed as possible, and make sure to answer all of them please. it will not take much time, so i request you to please take some of your time out to answer the questions.

1. What are the differences between an Array and an ArrayList?

2. Write a method that removes the smallest value from an ArrayList. [Hint: Integer has a method CompareTo(Integer other) that returns a postive integer if this is greater than other, a negative integer if this is less than other, and 0 if this is equal to other.]

3. Write and test a method: public void filter(ArrayList