Practice Implementations (15.4.3) - Collections and Generics

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6 sample questions

Question 1.
What is the difference between FIFO and LIFO?
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Think about how a queue and a stack work.
Question 2.
Give one primary use of a PriorityQueue.
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Consider situations like emergency services.
3Question 3.
What type of order does a PriorityQueue maintain?
- Alphabetical
- Natural or Custom Order
- Random Order
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Think about how tasks are ordered in terms of urgency.
4Question 4.
True or False: An ArrayDeque can be used for both FIFO and LIFO operations.
- True
- False
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Recall the structure of the ArrayDeque.
Question 5.
Using Java, implement a program to simulate a customer service system with a PriorityQueue that queues customers by their service type (e.g., urgent, normal, low priority).
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Consider creating a Customer class with a field for priority.
Question 6.
Develop a Java program that reverses strings using an ArrayDeque as a stack. Input a string and display the reversed output.
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Think about how the Last In, First Out principle works.

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