Task $2$: Linked List Operations $($Lab $3)$

$1.$ Task Description: Summarize the task involving creating and traversing a linked list.

$2.$ Code Implementation: Provide the code for linked list insertion and traversal. Example:

$```$

java

class Node $\{$

int data;

Node next;

Node$($int data$)\{$

this.data $=$ data;

this.next $=$ null;

$\}$

$\}$

Node head $=$ null;

head $=$ new Node$(10)$;

head.next $=$ new Node$(20)$;

$```$

$3.$ Explanation: Discuss the differences between linked lists and arrays, particularly in terms of memory usage and dynamic sizing.

$4.$ Output: Provide the output of the linked list traversal.

$3.$ Explanation: Explain how HashSet ensures uniqueness and how operations like union and intersection work.

$4.$ Output: Example output of the set operations.

Part $2$: Reflection and Discussion

Key Takeaways: Summarize the important concepts learned in the lab, such as dynamic data structures, memory management, and efficient set operations.