A linked list is a linear data structure where each element is a separate object. Each element (or node) of a list consists of two items - the data and a reference to the next node.
Solution Code
Data Structures
class Node:
def __init__(self, data):
self.data = data
self.next = None
class LinkedList:
def __init__(self):
self.head = None
def append(self, data):
new_node = Node(data)
if not self.head:
self.head = new_node
return
last = self.head
while last.next:
last = last.next
last.next = new_node
# Example usage
ll = LinkedList()
ll.append(1)
ll.append(2)
ll.append(3)Explanation
This code snippet demonstrates how to implement a linked list in Python.Guided Hints
Define a Node class
Define a LinkedList class with a head
Implement an append method to add nodes