Зміст курсу

Java Data Structures

1. Basic Data Structures

Introduction to Data Structures List and ArrayList Challenge (ArrayList)CRUD operations LinkedList Implementing our LinkedList Challenge (LinkedList)Section 1 Summary

2. Additional Data Structures

Queue Deque Queue Practice Stack Challenge (Deque Practice)Section 2 Summary

3. Map

What is Map?HashMap<>HashMap Practice Map with Other Data Structures Section 3 Summary

4. enum & Stream API

enum Challenge (Character Class)Stream API Method Reference Stream Practice Section 4 Summary

Java Data Structures

Section 2 Summary

Great!

You've completed another section of this quite challenging course. You've written two not-so-simple programs and delved into data structures with the principles of FIFO and LIFO. These are very useful data structures in certain situations. They may not be suitable for every solution, but in cases where you need to iterate from one end of the data structure, Queue and Deque are indispensable.

You're also starting to tackle quite complex and comprehensive practical assignments. Such knowledge can be easily applied in practice, and I can say that the data structures you've learned in this and the previous section are often used in real-world scenarios. I believe you understand how they are applied 🧐.

I've prepared a quiz for you that will help you recall and better internalize everything you've learned.

1. What is the primary principle of a `Queue` data structure?

2. Which Java interface is commonly used to implement a `Queue`?

3. Which of the following is a valid method for adding an element to the front of a `Deque` in Java?

4. What is the purpose of the `pop()` method in the `Stack` class?

5. In Java, what does it mean for a method to be deprecated?

6. What is the primary principle of a `Stack` data structure?

7. What is the purpose of the `offer()` method in the `Queue` interface?

8. In a `Queue`, what does the `poll()` method do?

What is the primary principle of a Queue data structure?

Виберіть правильну відповідь

First In, Last Out (FILO)

First In, First Out (FIFO)

Last In, Last Out (LILO)

Last In, First Out (LIFO)

Which Java interface is commonly used to implement a Queue?

Виберіть правильну відповідь

List

Set

Queue

Map

Which of the following is a valid method for adding an element to the front of a Deque in Java?

Виберіть правильну відповідь

push()

addFirst()

enqueue()

appendFirst()

What is the purpose of the pop() method in the Stack class?

Виберіть правильну відповідь

Adds an element to the stack

Removes the top element from the stack

Retrieves the top element without removing it

Retrieves the bottom element without removing it

In Java, what does it mean for a method to be deprecated?

Виберіть правильну відповідь

The method is new and improved

The method is outdated and should be avoided

The method is highly recommended for use

The method is not applicable for the current Java version

What is the primary principle of a Stack data structure?

Виберіть правильну відповідь

First In, Last Out (FILO)

First In, First Out (FIFO)

Last In, Last Out (LILO)

Last In, First Out (LIFO)

What is the purpose of the offer() method in the Queue interface?

Виберіть правильну відповідь

Adds an element to the front of the queue

Adds an element to the end of the queue

Retrieves and removes the front element

Retrieves and removes the end element

In a Queue, what does the poll() method do?

Виберіть правильну відповідь

Adds an element to the front of the queue

Adds an element to the end of the queue

Retrieves and removes the front element

Retrieves and removes the end element

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