Which of the following Python data structures is similar to a doubly linked list?ListTupleDictionarySet
Question
Which of the following Python data structures is similar to a doubly linked list?
- List
- Tuple
- Dictionary
- Set
Solution
None of the Python data structures mentioned (List, Tuple, Dictionary, Set) are similar to a doubly linked list.
A doubly linked list is a type of linked list in which each node contains a reference to the next node as well as the previous node in the sequence. This allows for efficient insertion and deletion of elements from both ends of the list.
In Python, the closest built-in data structure to a doubly linked list would be a deque (double-ended queue) in the collections module, which allows for efficient appending and popping from both ends.
Here's how you can use a deque in Python:
from collections import deque
# Create a deque
d = deque()
# Append to the right
d.append('a')
# Append to the left
d.appendleft('b')
# Pop from the right
right = d.pop()
# Pop from the left
left = d.popleft()
However, if you specifically need a doubly linked list, you would have to implement it yourself in Python.
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