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Generics MicroLabs

The microlabs for the Generics chapter are all grouped together. So, you need to work through them package by package. The following list is the package name followed by a quick description of the assignment.

1. StackArrayList -- Implement Stack<E> to use an ArrayList as a stack. You need to make the push, pop, and isEmpty functions.
2. StackArray -- Implement Stack<E> to use an array as a stack. You'll need to potentially grow the array in the push method. Do this first with an E[] array, and then again with an Object[] array. Both should compile without warnings and pass the tests.
3. Table -- Implemented for you is Entry<K, V>.
   Implement Table<K,V> so that it manages an ArrayList of Entry<K,V>. You must implement
   • get which takes a key and returns either the entry from the ArrayList with that key, or null if none is found.
   • put which takes a key and value and sets the value in the ArrayList to Entry(key, value);
     • Remember, a key point to exactly one value
   • remove which takes a key and removes it from the ArrayList if it's in there. It's a void method; no return type.
4. TableNested -- Take the previous microlab, and make Entry a nested class. Think about if it'll need to be generic or not.
5. Swap -- Get the test to pass. Look at the specific values being passed in to help you figure it out. Modify the tests, not the code.
6. ArrayListCombiner -- Write two methods, superCombiner and extendCombiner, which each take two arraylists and append all of the items from the second to the first. superCombiner should use ? super E and extendCombiner should use ? extends E.
7. MapFunc -- Make a map method that takes an ArrayList and a Function<T,R> object and returns an arraylist containing all of the elements of the first with the function applied to them.
8. Pair -- This is a multi-step one:
   1. Create a Pair that stores a pair of elements of type E.
   2. Create two methods, min and max, that return the largest and smallest of the Pair.
   3. Create a utility class called Arrays and, in that, create a method
      public static <___> Pair<E> firstLast(ArrayList<___> a)
      That returns a Pair containing the first and last element of the array.
      NOTE: The <___> is there because you need to fill in the blank.
   4. In Arrays make two methods, min and max that returns the smallest and largest elements in the ArrayList.
   5. In Arrays make a minMax function that returns a Pair with the minimum and maximum values of the ArrayList.