Computer Science – 10.4 Introduction to Abstract Data Types (ADT) | e-Consult
10.4 Introduction to Abstract Data Types (ADT) (1 questions)
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A linked list can be used to implement a stack by utilizing its ability to easily add and remove nodes from the beginning (head) of the list. The head of the linked list represents the top of the stack.
Diagram:
Push (Add to Stack):
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Pop (Remove from Stack):
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Advantages of using a linked list for a stack:
- Dynamic Size: The stack can grow or shrink as needed, unlike an array-based stack with a fixed size.
- Efficient Insertion/Deletion: Adding and removing elements at the top of the stack are O(1) operations.
Disadvantages of using a linked list for a stack:
- Extra Memory Overhead: Each node requires extra memory to store the 'next' pointer.
- Slightly Slower Access: Accessing elements in a linked list requires traversing the list, which can be slightly slower than accessing elements in an array (especially for random access).
In summary, a linked list provides a flexible and dynamic way to implement a stack, but it comes with a slight performance overhead compared to an array-based implementation.