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Python Deque
This quiz is about Python Deque
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Question 1
What is the primary advantage of using a deque over a traditional list in Python?
Deque allows random access to elements.
Deque supports efficient append and pop operations from both ends.
Deque automatically sorts elements upon insertion.
Deque has a fixed size and cannot grow dynamically.
Question 2
In a double-ended queue (deque), which operation is not allowed?
Appending elements to both ends.
Popping elements from both ends.
Random access to elements by index.
Removing elements from both ends.
Question 3
What is the time complexity of the 'remove(value)' operation in a deque?
O(1)
O(n)
O(k)
O(log n)
Question 4
Which of the following best describes an Input Restricted Deque?
Elements can be added from both ends, but removed only from one end.
Elements can be added and removed from both ends.
Elements can only be added from one end and removed from both ends.
Elements can be added and removed only from the right end.
Question 5
When using the 'rotate(n)' method on a deque, what does a negative value for n signify?
Rotate to the left by n steps.
Rotate to the right by n steps.
Reverse the deque entirely.
No rotation occurs.
Question 6
Which method can be used to append an element to the right side of a deque?
insert()
appendleft()
append()
rightappend()
Question 7
Which of the following is a valid way to initialize a deque in Python?
d = deque([1, 2, 3, 4])
d = deque("hello")
d = deque()
All of the above
Question 8
What will be the output of the following code?
from collections import deque
d = deque([1, 2, 3, 4])
d.rotate(1)
print(d)
[2, 3, 4, 1]
[4, 1, 2, 3]
[1, 2, 3, 4]
[3, 4, 1, 2]
Question 9
Which of the following deque methods can be used to remove an element from the right end of the deque?
pop()
remove()
popright()
removeleft()
Question 10
What will be the output of the following code?
from collections import deque
d = deque([1, 2, 3, 4])
d.extendleft([0, -1])
print(d)
[-1, 0, 1, 2, 3, 4]
[0, -1, 1, 2, 3, 4]
[1, 2, 3, 4, 0, -1]
[-1, 0, 1, 2, 3, 4]
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