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ECET 370 Week 1 iLab Array Based Implementations (New Syllabus)
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ECET 370 Week 1 iLab Array Based Implementations (New Syllabus)

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ECET 370 Week 1 iLab Array-Based Implementations

iLAB OVERVIEW

Scenario and Summary

The purpose of the iLab exercises is to help the student acquire skills in developing programs that require implementation with arrays of abstract data types, such as lists and bags.

Note!Software Citation Requirements

This course uses open-source software which must be cited when used for any student work. Citation requirements are on theOpen Source Applications page. 
Please review the installation instruction files to complete your assignment

Deliverables

There are four exercises in this iLab, although not all of them will be required for submission. Be sure to read the following instructions carefully.

Exercise 1: No submission is required.

Exercise 4 contains parts a, b, c and continues through part i. Keep in mind that the methods developed for each of these parts should be within the same bag class.

Create a folder and name it Week 1 iLab. Inside this folder, create the subfolders Ex2, Ex3, and Ex4. Place the solution to each of the three exercises required for submission in the corresponding subfolder. Compress the folder Week 1 iLab, and drop the resulting zipped folder into the Dropbox.

Note that Exercises 2, 3, and 4 require software development. Place in the corresponding folders only .java files. Do not submit the .class files or other files or folders that are generated by the IDE.

Required Software

Eclipse

Access the software at https://lab.devry.edu .

iLAB STEPS

Exercise 1: Review of Array-Based Lists

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Create a project using the classes in this zip file and name it "A Simple ArrayList Class." Compile it, run it, and review the code that is given carefully. This code tests the ArrayList class discussed in the lecture.

Exercise 2: Implementing an Array List

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Modify the class ArrayList given in Exercise 1 by using expandable arrays. That is, if the list is full when an item is being added to this list, the elements will be moved to a larger array. The new array should have twice the size of the original array.

Exercise 3: Using an Array-Based List

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Using the class ArrayList completed in the previous exercise, write a program to store 1,000 random numbers, each in the interval [0, 500]. The initial size of the array in the class should be set to 100. Print the numbers.

Exercise 4: Implementing a Bag Class

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Create a class bag (multiset) that uses an expandable array to store the bag items. The item type must be a Java String type; that is, the bag will store strings of characters. The class should have the methods listed below. Create a main class to test your bag class. This main class should fill a bag with the keywords of the Java language.

  1. Bag(): default constructor
  2. booleanisEmpty(): determines whether the bag is empty
  3. void print(): prints the bag elements
  4. intgetLength(): returns the number of items in the bag
  5. void clear(): removes all of the items from the bag
  6. void add(String item): adds an item to the bag
  7. voidremoveOne(String item): removes item from the bag; only one occurrence of item should be removed.
  8. voidremoveAll(String item): removes item from the bag; all occurrences of item should be removed.
  9. int count(String item): counts the number of occurrences of item in the bag

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