ITT201 Data Structure Assessment

Instructions:

1. Students are required to cover all stated requirements.
2. Your submission must be uploaded to Moodle in zip file including all source codes and documentation/manual/report.
3. Include a title/cover page containing the subject title and code and the name, student id numbers.

Requirements:

• The assignment is part 1 of an individual programming project, which is to implement several different function modules as described.
• You need to carefully follow the input format and generate sensible output. If the program crashed during testing, you may lose the corresponding marks in specific tests.
• Any submission after the due date will be dealt with late submission penalties.

Complete all

Q1. Using the concept of stack, implement the function of printing summation of first n natural numbers.

Q2. Using listname.add() and listname.set() methods of LinkedList class, implement the function of updating a linked list.

Q3. Using the concept of queue, implement the function of printing employee details in Queue.

Q4. Using addFirst() and addLast() methods of Linked List class, implement the function of adding an element at the first and last position of a linked list.

Q5. Using the methods of vector, implement the function of creating of a vector and swapping two elements of the vector.

After performing any action, the program should print out reasonable output to guide user or display information. It should also handles any exceptional input to avoid crashing and guiding users for next action.

Submission

Bundle all your source code and documentation into a zip file named ITC201_Firstname_Surname_StudentNumberr[assessment1].zip

Submit it to the Moodle system by the due date.

Assessment Marking Criteria

[5 marks] Q1

[5 marks] Q2

[5 marks] Q3

[5 marks] Q4

[5 marks] Q5

The assessment required students to demonstrate their understanding of fundamental data structures,stacks, queues, linked lists, and vectors,by implementing five distinct programming functions. The final submission had to include all source code and documentation in a single zip file. Key requirements included:

• Q1: Implementing a function to calculate the summation of the first n natural numbers using a stack.

• Q2: Implementing a function to update a linked list using the add() and set() methods.

• Q3: Implementing a function to print employee details using a queue .

• Q4: Implementing a function to add elements to the first and last positions of a linked list using the addFirst() and addLast() methods.

• Q5: Implement a function to create a vector and swap two of its elements using vector methods.

All functions needed to produce clear output, guide the user, and handle exceptional input to prevent program crashes.

The Assessment Approach

The academic mentor guided the student through the assessment using a structured, step-by-step process. The approach was to tackle each question individually, ensuring the student fully understood the concept before moving on to the next.

1. Understanding the Requirements : The mentor began by having the student read through the entire assessment brief to grasp the overall scope and specific requirements. They emphasized the importance of following the submission guidelines, including the zip file format and naming convention.

2. Step-by-Step Implementation : The mentor and student tackled each of the five questions as separate modules. This modular approach helped the student focus on one data structure at a time.

   • Q1 (Stacks) : The mentor explained the LIFO (Last-In, First-Out) principle of a stack and how it could be used to solve the summation problem. The student was guided to push numbers from 1 to n onto the stack and then pop them one by one, adding them to a running total. This method reinforced the core functionality of a stack.

   • Q2 (Linked Lists) : The mentor first clarified the concept of a linked list and its dynamic nature. They then focused on the specific methods required: add() for inserting new elements and set() for updating an element at a specific index. The student practiced implementing a function that would add new nodes and then modify an existing node, observing the changes in the list.

   • Q3 (Queues) : The mentor introduced the FIFO (First-In, First-Out) principle of a queue. For the employee details problem, the student learned to add (enqueue) employee objects into the queue and then remove (dequeue) them in the same order they were added, printing their details. This mirrored a real-world scenario like a waiting list.

   • Q4 (Linked Lists) : This section built upon the previous linked list knowledge. The mentor highlighted the specialized methods addFirst() and addLast(), which provide efficient ways to insert elements at the beginning and end of the list without needing to iterate through it. The student implemented a function to demonstrate this behavior, confirming the elements were added to the correct positions.

   • Q5 (Vectors) : The mentor explained that a vector is a dynamic array that can resize itself. The student was guided to create a vector, populate it with elements, and then use vector methods (e.g., Collections.swap() in Java or a similar method in other languages) to swap the positions of two elements, confirming the change by printing the vector before and after the swap.

3. Code Quality and Error Handling : Throughout the process, the mentor stressed the importance of writing clean, commented code and incorporating error handling. The student was encouraged to add try-catch blocks or conditional checks to handle invalid user input (e.g., non-numeric input for n in Q1) to prevent the program from crashing, a key requirement of the assessment.

4. Documentation and Submission : Finally, the mentor guided the student in preparing the documentation (report/manual), explaining what should be included, such as an introduction, a breakdown of each function, and screenshots of the program's output. The student then bundled all the source code files and documentation into a single zip file with the correct naming convention, ready for submission.

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