15.4.3.2. ArrayDeque

Try these first

1. 1.

   What is the primary use of ArrayDeque?

   Hint

   Think of both adding and removing elements.

2. 2.

   How do you add an element to the front of an ArrayDeque?

   Hint

   What method would you use for adding to the front?

3. 3.

   What is ArrayDeque used for?

   • A fixed-size array
   • A double-ended queue
   • A single-ended queue

   Hint

   Focus on the usability of elements on both ends.

4. 4.

   True or False: ArrayDeque allows null elements.

   • True
   • False

   Hint

   Consider how ArrayLists handle nulls in contrast.

5. 5.

   Design a function that uses ArrayDeque to simulate a queue's behavior in handling customer service requests.

   Hint

   Think about customer service flow.

6. 6.

   Create a program that uses ArrayDeque to check if a string is a palindrome.

   Hint

   Consider the properties of palindromes in reversing strings.