How would you traverse...

To traverse a linked list in $$O(n)$$ time complexity, you would follow a straightforward approach where you visit each node of the linked list exactly once. Here's a step-by-step explanation and a sample code implementation in Python:

Step-by-Step Explanation

1. Start at the Head: Begin at the head of the linked list.
2. Iterate through the List: Use a loop to traverse the list. In each iteration, move to the next node.
3. End Condition: The loop continues until you reach the end of the list, which is indicated by a node that points to None (i.e., the next node does not exist).

Python Code Example

Here is a simple Python function to traverse a linked list:

class Node:
    def __init__(self, data):
        self.data = data
        self.next = None

class LinkedList:
    def __init__(self):
        self.head = None

    def traverse(self):
        current = self.head
        while current:
            print(current.data)
            current = current.next

In this code:

• The Node class defines the structure of a linked list node, which includes the node data and a pointer to the next node.
• The LinkedList ...