DSA · Theory

Implementation of Stack using Linked List

Theory

18/810

Implementation of Stack using Linked List

Implementation of Stack using Linked List is a DSA topic. In plain words you use it for a ticket queue node in a counter. Don’t start with a slogan — start with that picture.

Smallest example: head → next → …. Type it, run it, and say what you see. If you can do that from memory, you know Implementation of Stack using Linked List.

From the example next to this theory: Implementation of Stack using Linked List — stack is LIFO: push/pop from the same end.

Trap — losing the next pointer on delete. Fix that before you talk about advanced DSA.

Viva — what is Implementation of Stack using Linked List? Then show head → next → …. Then name the trap.

Diagram

    | 3 |  ← top (pop)
    | 2 |
    | 1 |
    LIFO

Exam tip

What is Implementation of Stack using Linked List? Show this: head → next → …. Trap: losing the next pointer on delete.

Example

stack = []
stack.append(10)   # push
stack.append(20)
print(stack.pop()) # 20
print(stack[-1])   # peek → 10

Implementation of Stack using Linked List — stack is LIFO: push/pop from the same end.

Short notes

DefImplementation of Stack using Linked List — a ticket queue node in a counter.
Rulehead → next → …
Traplosing the next pointer on delete
Usea counter

DSA · Theory

Implementation of Stack using Linked List

← All stacks

Theory

18/810

Implementation of Stack using Linked List

Implementation of Stack using Linked List is a DSA topic. In plain words you use it for a ticket queue node in a counter. Don’t start with a slogan — start with that picture.

Smallest example: head → next → …. Type it, run it, and say what you see. If you can do that from memory, you know Implementation of Stack using Linked List.

From the example next to this theory: Implementation of Stack using Linked List — stack is LIFO: push/pop from the same end.

Trap — losing the next pointer on delete. Fix that before you talk about advanced DSA.

Viva — what is Implementation of Stack using Linked List? Then show head → next → …. Then name the trap.

Diagram

    | 3 |  ← top (pop)
    | 2 |
    | 1 |
    LIFO

Exam tip

What is Implementation of Stack using Linked List? Show this: head → next → …. Trap: losing the next pointer on delete.

Example

stack = []
stack.append(10)   # push
stack.append(20)
print(stack.pop()) # 20
print(stack[-1])   # peek → 10

Implementation of Stack using Linked List — stack is LIFO: push/pop from the same end.

Short notes

DefImplementation of Stack using Linked List — a ticket queue node in a counter.
Rulehead → next → …
Traplosing the next pointer on delete
Usea counter

Implementation of Stack using Linked List

Example

Short notes

Questions

Implementation of Stack using Linked List

Example

Short notes

Questions