CS173: Intro to Computer Science - Arrays

Activity Goals

The goals of this activity are:
  1. To be able to explain that an array is an ordered collection of data
  2. To be able to create an array and assign its elements
  3. To be able to access an element from an array by its index

Supplemental Reading

Feel free to visit these resources for supplemental background reading material.

The Activity

Directions

Consider the activity models and answer the questions provided. First reflect on these questions on your own briefly, before discussing and comparing your thoughts with your group. Appoint one member of your group to take notes for the group, and appoint another member to discuss your findings with the class. After class, think about the questions in the reflective prompt and respond to those individually. Report out on areas of disagreement or items for which you and your group identified alternative approaches. Write down and report out questions you encountered along the way for group discussion.

Model 1: Creating and Accessing Arrays


Java Visualizer Example of an Array

Questions

  1. What is the size of the grades array?
  2. What are the indices of the grades array?
  3. Why does the array use .length, when a String uses .length(), to report its size?

Submission

Submit your answers to the questions using the Collaborative Spaces section of OneNote. You can add a page with your name and your group members' names, and today's date, as the title. Under the appropriate section (i.e., "Class Notes", "Collaborative Spaces", "Reflective Prompts") that you can select on the left side of the screen, you can click "Add Page" on the right side. You can answer any reflective prompt questions in the Reflective Journal section of your OneNote Classroom personal section.