Kurssisisältö

Java Data Structures

1. Fundamental Data Structures in Java

Introduction to Data Structures List and ArrayList in Java Challenge: Library Management System CRUD Operations in Java LinkedList in Java Implementing LinkedList in Java Challenge: Implementing size and delete Methods in LinkedList Quiz: Fundamental Data Structures

2. Advanced Data Structures in Java

Queue Data Structure in Java Deque Data Structure in Java Challenge: Implementing a TaskManager Service Stack Data Structure in Java Challenge: Implementing BrowserHistory Quiz: Advanced Data Structures

3. Mastering Map in Java

What is Map?Working with HashMap in Java HashMap Practice in Java Map with Other Data Structures Quiz: Mastering Map

4. Advanced Java Features and Techniques

Working with Enum in Java Challenge: Implementing Character Classes Stream API in Java Method Reference in Java Practicing with Stream API Quiz: Enum and Stream API

Quiz: Mastering Map

You've made solid progress toward becoming a Java developer by completing this section.

Maps provide an efficient way to store and retrieve data using key-value pairs. Using HashMap, you also implemented an online store, which is good practice for applying this concept.

Keep going at this pace, and you'll continue building strong backend development skills.

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?

Select the correct answer

A linear data structure.

A key-value pair collection.

A sorting algorithm.

A stack implementation.

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

Select the correct answer

O(1)

O(log n)

O(n)

O(n^2)

How does HashMap handle collisions?

Select the correct answer

By using a linked list for each bucket.

By rehashing the entire map.

By discarding the collided element.

By doubling the size of the map.

Which of the following interfaces does HashMap implement in Java?

Select the correct answer

HashTable

Object

Map

List

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Kurssisisältö

Java Data Structures

1. Fundamental Data Structures in Java

2. Advanced Data Structures in Java

3. Mastering Map in Java

What is Map?Working with HashMap in Java HashMap Practice in Java Map with Other Data Structures Quiz: Mastering Map

4. Advanced Java Features and Techniques

Working with Enum in Java Challenge: Implementing Character Classes Stream API in Java Method Reference in Java Practicing with Stream API Quiz: Enum and Stream API

Quiz: Mastering Map

You've made solid progress toward becoming a Java developer by completing this section.

Maps provide an efficient way to store and retrieve data using key-value pairs. Using HashMap, you also implemented an online store, which is good practice for applying this concept.

Keep going at this pace, and you'll continue building strong backend development skills.

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?

Select the correct answer

A linear data structure.

A key-value pair collection.

A sorting algorithm.

A stack implementation.

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

Select the correct answer

O(1)

O(log n)

O(n)

O(n^2)

How does HashMap handle collisions?

Select the correct answer

By using a linked list for each bucket.

By rehashing the entire map.

By discarding the collided element.

By doubling the size of the map.

Which of the following interfaces does HashMap implement in Java?

Select the correct answer

HashTable

Object

Map

List

Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 3. Luku 5

Java Data Structures

Quiz: Mastering Map

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?

Java Data Structures

Quiz: Mastering Map

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?

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?

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?