Complete Java SE 8 Developer Bootcamp - Deques

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Information Technology (IT), Architecture
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University
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Hard
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a deque primarily used for?
Storing elements in a fixed order
Limiting the number of elements
Allowing elements to be added or removed from both ends
Ensuring thread safety
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method would you use to add an element to the head of a deque without throwing an exception?
getFirst
removeFirst
offerFirst
addFirst
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of an ArrayDeque?
It can store null elements
It has a fixed size limit
It is not thread-safe
It is slower than other deque implementations
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might you prefer a non-thread-safe object like ArrayDeque?
It is easier to use
It performs better when thread safety is not a concern
It automatically manages memory
It supports more data types
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the given example, which element is removed first when using pollLast?
Hal Jordan
Peter Parker
Clark Kent
Bruce Wayne
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