Doubly Linked List | Implementation
🔥 Learn how to implement a *Doubly Linked List in Python* from scratch! In this video, we’ll cover everything you need to know, including *insertion, deletion, traversal, and advantages* of a **Doubly Linked List (DLL)**.
🔹 *What You’ll Learn in This Video:*
✔️ What is a Doubly Linked List?
✔️ How to create a *Node Class in Python*
✔️ How to insert and delete nodes efficiently
✔️ How to traverse a Doubly Linked List
✔️ Real-world applications and advantages
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class Node:
def __init__(self, data):
self.data, self.prev, self.next = data, None, None
class DoublyLinkedList:
def __init__(self):
self.head = None
def insert(self, data):
new_node = Node(data)
if not self.head:
self.head = new_node
else:
temp = self.head
while temp.next:
temp = temp.next
temp.next, new_node.prev = new_node, temp
def display(self):
temp = self.head
while temp:
print(temp.data, end=" ⇄ ")
temp = temp.next
print("None")
Example Usage
dll = DoublyLinkedList()
for i in [1, 2, 3]: dll.insert(i)
dll.display() # Output: 1 ⇄ 2 ⇄ 3 ⇄ None
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