8.2. Introduction to Linked Bags¶
8.2.1. Objectives¶
Upon completion of this module, students will be able to:
Name the function and purpose of basic Java data structures
State key characteristics of Bags in Java
Build and populate Bags in Java
8.2.2. Linked Bags¶
8.2.2.1. Suggested Reading:¶
Suggested Reading: Chapter 3: Bag Implementation That Links Data from Data Structures and Abstractions with Java, 4th edition by Frank M. Carrano and Timothy Henry
8.2.3. Introduction to Linked Bags¶
8.2.4. LinkedBag add and toArray video¶
8.2.4.1. [12:45] LinkedBag add and toArray Video Demonstration¶
Video Slides 8.2.4.1-LinkedBagAddToArray.pdf
8.2.5. Checkpoint 1¶
8.2.6. Demo Video ExLinkedBagJunit¶
8.2.6.1. [7:14] ExLinkedBagJunit Video Demonstration¶
8.2.6.2. Code examples¶
Try It Yourself
In Eclipse, use the Project > Download Assignment… menu command to download the lab project named “ex8.5.2.2-LinkedBagsWithJUnit”
Refer to 01.02: Lab: LightBot for Beginners if you need to review the instructions for downloading Eclipse projects.
8.2.7. LinkedBag getFrequencyOf and contains video¶
8.2.7.1. [14:00] LinkedBag getFrequencyOf and contains Video Demonstration¶
Video Slides 8.2.6.1-LinkedFreqContains.pdf
8.2.8. Checkpoint 2¶
8.2.9. LinkedBag Removing an item¶
8.2.9.1. [13:44] LinkedBag Removing an Item Video Demonstration¶
Video Slides 8.2.7.1-LinkedRemove.pdf
Tradeoffs of using a linked chain implementation for a bag
Pros |
Cons |
|---|---|
Bag can grow in size easily |
Requires more space than a same-sized array |
Adding an entry to the bag is fast |
Removing a specified entry requires time to locate the entry |
8.2.10. Checkpoint 3¶
8.2.11. Wrapping up Bags¶
As you’ve seen, Bags are a simple but foundational data structure in Java. We will continue with other data structures and their unique characteristics, including opportunities to practice building them, in later modules.
Recall that the objectives for this module were to:
Name the function and purpose of basic Java data structures
State key characteristics of Bags in Java
Build and populate Bags in Java
By this point, you should have achieved each of these objectives. If you have questions or concerns about your ability to accomplish each of these, please reach out to the instructor of the course.
