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Java Data Structures
course content

Зміст курсу

Java Data Structures

Java Data Structures

1. Basic Data Structures
Introduction to Data StructuresList and ArrayListChallenge (ArrayList)CRUD operationsLinkedListImplementing our LinkedListChallenge (LinkedList)Section 1 Summary
2. Additional Data Structures
QueueDequeQueue PracticeStackChallenge (Deque Practice)Section 2 Summary
3. Map
What is Map?HashMap<>HashMap PracticeMap with Other Data StructuresSection 3 Summary
4. enum & Stream API
enumChallenge (Character Class)Stream APIMethod ReferenceStream PracticeSection 4 Summary

bookSection 3 Summary

Great, you're one step closer to becoming a Java developer, as today you've completed another section.

Maps are a very useful data structure that allows you to store values in a key-value structure. This way, you can store data in an organized manner with fast access by key. Additionally, with the help of HashMap, you implemented an online store, which is quite good practice.

You're doing a fantastic job, and by moving forward at the same pace, you'll achieve unprecedented success in backend programming!

Now, a small quiz is prepared for you to recall the basic things you've learned in this section:

1. What is a `HashMap` in Java?
2. What is the average time complexity for basic operations (insertion, deletion, and retrieval) in a `HashMap`?
3. How does `HashMap` handle collisions?
4. Which of the following interfaces does `HashMap` implement in Java?
What is a `HashMap` in Java?

What is a HashMap in Java?

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What is the average time complexity for basic operations (insertion, deletion, and retrieval) in a `HashMap`?

What is the average time complexity for basic operations (insertion, deletion, and retrieval) in a HashMap?

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How does `HashMap` handle collisions?

How does HashMap handle collisions?

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Which of the following interfaces does `HashMap` implement in Java?

Which of the following interfaces does HashMap implement in Java?

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Секція 3. Розділ 5
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