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Java Data Structures

Section 3 SummarySection 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?

Selecione a resposta correta

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

Selecione a resposta correta

How does HashMap handle collisions?

Selecione a resposta correta

Which of the following interfaces does HashMap implement in Java?

Selecione a resposta correta

Tudo estava claro?

Seção 3. Capítulo 5
course content

Conteúdo do Curso

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

Java Data Structures

Section 3 SummarySection 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?

Selecione a resposta correta

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

Selecione a resposta correta

How does HashMap handle collisions?

Selecione a resposta correta

Which of the following interfaces does HashMap implement in Java?

Selecione a resposta correta

Tudo estava claro?

Seção 3. Capítulo 5
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