This document outlines exercises for a class on array-based lists. It includes 5 exercises: 1) reviewing an array-based list class, 2) modifying the class to add new functions, 3) using the modified class to store random numbers with no duplicates, 4) reviewing the built-in ArrayList class, and 5) rewriting the random number storage using ArrayList.

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This pack of ECET 370 Week 2 Lab 2 consists of:
Exercise 1
Exercise 2
Exercise 3
Exercise 4
Exercise 5
Outputs
General Instructions
Exercises 1, 2, and 3 use the programs in DocSharing labeled
“User-defined array list."
Exercise 4 uses the programs in DocSharing labeled “Using
java.util.ArrayList."
Exercise 1: Review of array-based lists Create a project using
the classes in the DocSharing area labeled “User-defined
array list." Compile it, run it, and review the code that is
given carefully.
This code tests the ArrayList class provided in the lecture.
Exercise 2: A user-defined array list Modify the class ArrayList
given in the lecture by adding to it the functions listed below
for Exercise 2. In each case, the appropriate error message
should be generated if an invalid condition occurs. For
example, an error message should be generated when trying
to insert an item in a given location in the list and the
location is out of range, a. ArrayList(inl size): create a
constructor that sets the size of the array list to the value
passed in size (note that the class variable SIZE cannot be

2. final anymore), b. int length(): create this function to
determine the number of items in the list (accessor function),
c. int gelSize(): create this function to determine the size of
the list (accessor function), d. void clear(): create this
function to remove all of the items from the list. After this
operation, the length of the list is zero, e. void replace(int
location, int item): create this function to replace the item in
the list at the position specified by location. The item should
be replaced with item. f. void insert(int location, int item):
create this function to add an item to the list at the position
specified by location, g. void remove(int item): create this
function to delete an item from the list. All occurrences of
item in the list should be removed, h. int get(inl location):
create a function that returns the element at location, i.
public ArrayList copy(): create a function that makes a deep
copy to another ArrayList object.
Exercise 3: Using an array-based list Using the class ArrayList
completed in the previous exercise, write a program that
uses it to store 100 random numbers. Consider that each of
these random numbers is an integer in the interval [0, 200].
Write the program in such a way that there are no number
duplicates.
Exercise 4: Review of the library class java.util. ArrayList
Create a project using the classes in the DocSharing area
labeled “Using java.util.ArrayList." Compile it, run it, and
review the code that is given carefully. This code is the
complete program given in our lecture that tests the library
class java.util.ArrayList.
Exercise 5: Using the library class java.util.ArrayList Rewrite
Exercise 3 (above) using the class java.util.ArrayList to store
the 100 random numbers.

3. General Questions - General Academic Questions
General Instructions
Exercises 1, 2, and 3 use the programs in DocSharing labeled
“User-defined array list."
Exercise 4 uses the programs in DocSharing labeled “Using
java.util.ArrayList."
Exercise 1: Review of array-based lists Create a project using
the classes in the DocSharing area labeled “User-defined
array list." Compile it, run it, and review the code that is
given carefully. This code tests the ArrayList class provided in
the lecture.
Exercise 2: A user-defined array list Modify the class ArrayList
given in the lecture by adding to it the functions listed below
for Exercise 2. In each case, the appropriate error message
should be generated if an invalid condition occurs. For
example, an error message should be generated when trying
to insert an item in a given location in the list and the
location is out of range. a. ArrayList(int size): create a
constructor that sets the size of the array list to the value
passed in size (note that the class variable SIZE cannot be
final anymore). b. int length(): create this function to
determine the number of items in the list (accessor function).
c. int getSize(): create this function to determine the size of
the list (accessor function). d. void clear(): create this
function to remove all of the items from the list. After this
operation, the length of the list is zero. e. void replace(int
location, int item): create this function to replace the item in
the list at the position specified by location. The item should
be replaced with item. f. void insert(int location, int item):
create this function to add an item to the list at the position

4. specified by location. g. void remove(int item): create this
function to delete an item from the list. All occurrences of
item in the list should be removed. h. int get(int location):
create a function that returns the element at location. i.
public ArrayList copy(): create a function that makes a deep
copy to another ArrayList object.
Exercise 3: Using an array-based list Using the class ArrayList
completed in the previous exercise, write a program that
uses it to store 100 random numbers. Consider that each of
these random numbers is an integer in the interval [0, 200].
Write the program in such a way that there are no number
duplicates.
Exercise 4: Review of the library class java.util.ArrayList
Create a project using the classes in the DocSharing area
labeled “Using java.util.ArrayList." Compile it, run it, and
review the code that is given carefully. This code is the
complete program given in our lecture that tests the library
class java.util.ArrayList.
Exercise 5: Using the library class java.util.ArrayList Rewrite
Exercise 3 (above) using the class java.util.ArrayList to store
the 100 random numbers.
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