Overview
This module covers the fundamental building blocks of software engineering: the crucial division between logical blueprints (Abstract Data Types) and their underlying physical implementations (Data Structures).
Architectural Principles
- Abstract Data Types (ADT): High-level interface definitions specifying external behavioral operations without tying logic to explicit memory management code.
- Data Structures vs. Abstract Data Types: Analyzing the design boundary separating specification models from literal machine memory configurations.
Physical Storage Backbones
- Array Lists: Bounded, contiguous, homogeneous layouts providing rapid constant-time indexing lookups.
- Circular Arrays: An index-wrapping array optimization that handles high-frequency changes at both ends without requiring data shifts.
- Linked List: Dynamically allocated memory nodes connected sequentially via pointer addresses, bypassing structural resizing penalties.
- Skip Lists: A layered probabilistic linked array structure leveraging randomized express layers to achieve search speeds over linked records.
Foundational Linear Interfaces
- Stack: A restricted boundary container operating on the Last In, First Out () protocol.
- Queues: A sequential traffic manager operating on the strict First In, First Out () baseline.
- Deques: A generalized bidirectional double-ended queue supporting insertion and erasure at both margins.
- Priority Queue: An ordered dispatcher that releases items based on assigned urgency metrics rather than raw chronological arrival time.
Notes in This Section
| Note Link | Description |
|---|---|
| Abstract Data Types (ADT) | Defines behavioral specifications decoupled from underlying physical memory management. |
| Data Structures vs. Abstract Data Types | Compares abstract interface contracts against concrete memory structures. |
| Array Lists | Sequential contiguous memory structures providing constant-time random access. |
| Circular Arrays | Array wrapper utilizing modular index wrapping for fast end manipulations. |
| Linked List | Dynamic pointer-linked node structures bypassing contiguous allocation constraints. |
| Skip Lists | Layered probabilistic linked lists providing logarithmic search and insertion bounds. |
| Stack | LIFO restricted container supporting push, pop, and top operations. |
| Queues | FIFO restricted container mapping sequential arrival buffers. |
| Deques | Bidirectional double-ended queue enabling constant-time edge edits. |
| Priority Queue | Priority-ordered dispatch container commonly backed by binary heaps. |