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?
Thanks for your feedback!
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Quiz: Mastering Map
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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?
Thanks for your feedback!