๐ Topic Summary
Data structures are fundamental concepts in computer science that dictate how data is organized and stored in a computer so that it can be used efficiently. Different kinds of data structures excel at different tasks. For example, some are optimized for quick searching, while others are better for storing data in a specific order. Understanding data structures is crucial for writing efficient and effective programs, especially in AP Computer Science Principles (CSP).
๐งฎ Part A: Vocabulary
Match the following terms with their definitions:
| Term |
Definition |
| 1. Array |
A. A structure where elements are accessed in a Last In, First Out (LIFO) manner. |
| 2. Linked List |
B. A collection of elements where each element points to the next. |
| 3. Stack |
C. A data structure that organizes data in a hierarchical manner. |
| 4. Queue |
D. A collection of elements of the same type, stored in contiguous memory locations. |
| 5. Tree |
E. A structure where elements are accessed in a First In, First Out (FIFO) manner. |
Answers:
- ๐ 1-D
- ๐ก 2-B
- ๐ 3-A
- ๐ 4-E
- ๐ 5-C
โ๏ธ Part B: Fill in the Blanks
Fill in the blanks with the correct terms:
A(n) __________ is a linear data structure where elements are added and removed from only one end, while a(n) __________ is a linear data structure where elements are added at one end and removed from the other. A __________ is a non-linear data structure that consists of nodes connected by edges. In contrast, an __________ stores elements of the same type in contiguous memory locations, allowing for fast access using an index. Finally a __________ consists of nodes where each node contains data and a pointer to the next node in the sequence.
Answers:
- ๐งฎ Stack
- ๐งช Queue
- ๐งฌ Tree
- ๐ Array
- ๐ก Linked List
๐ค Part C: Critical Thinking
Explain a scenario where using a linked list would be more advantageous than using an array. Why?