Collections Homework

1. Show the fields of the given Collection after the following sequence of Collection operations are executed. Show any values returned by the operations

   ArrayCollection<String> strcoll = new ArrayCollection<String>();
   strcoll.add("red");
   strcoll.add("blue");
   strcoll.add("black");
   strcoll.add("orange");
   boolean ok = strcoll.contains("black");
   String str = strcoll.get("white");
   strcoll.remove("black");
   strcoll.add("green");

2. Show the fields of the given Collection after the following sequence of Collection operations are executed. Show any values returned by the operations

   LinkedCollection<String> strcoll = new LinkedCollection<String>();
   strcoll.add("red");
   strcoll.add("blue");
   strcoll.add("black");
   strcoll.add("orange");
   boolean ok = strcoll.contains("black");
   String str = strcoll.get("white");
   strcoll.remove("black");
   strcoll.add("green");

3. Write a method boolean replace(T old, T new) for the ArrayCollection class. The method should replace every occurrence of old with new. If old is not found in the Collection, the method should return false; otherwise it should return true.
4. Write a method boolean replace(T old, T new) for the LinkedCollection class. The method should replace every occurrence of old with new. If old is not found in the Collection, the method should return false; otherwise it should return true.
5. Write code to do the following:
   • Create an ArrayCollection of Strings.
   • Write a loop that will prompt the user for Strings and add each String to the Collection.
   • Prompt the user for an old String and a new String, then replace the old String in the Collection with the new String.
   • Print a message stating whether the replacement was successful.
   • Print the number of elements in the Collection.

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