Extending A Bag In The Linked List-Based Bag Implementation

Extending A Bagin The Linked List Based Bag Implementation We Demonst

Extending a Bag In the linked-list based bag implementation, we demonstrated the functionalities, such as, add, remove, and list. This assignment is to extend the functionalities of the bag with other operations average, min, and max. You need to extend the Bag class (under Wk 2, BagLinked_List.cpp) with the following methods: -int Bag::min( ), is to find minimum of items of the bag. -int Bag::max( ), is to find maximum of items of the bag -float Bag::ave( ), is to find average of the items of the bag. After expanding the Bag class with these functions, demonstrate their functionalities with a similar to: Create a bag A with the items 8, 4, 5, 6, 1, 3; and create another bag, B, with the items 4, 6, 9, 2. Then show that cout

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The task of extending a linked list-based bag implementation involves adding utility functions to compute minimum, maximum, and average values of the items stored within the bag. This process requires a clear understanding of both linked list data structures and class extension techniques in C++. The existing Bag class, presumably already capable of adding, removing, and listing items, needs to be augmented with three additional member functions: min(), max(), and ave(). These functions allow for comprehensive analysis of the bag’s contents, facilitating functions that are critical in many data processing scenarios.

In the context of the existing code, the key modifications involve iterating through the linked list to find the minimum and maximum values, as well as calculating the average. Since the implementation previously relied on string variables, it is essential to modify the structure—replacing string to int variables—to accurately perform numerical computations. This change ensures that the comparisons and calculations are correctly executed, preventing type mismatch errors and aligning with the assignment's specifications.

Implementing the min() and max() functions requires traversal of the linked list from the head node. During traversal, each node’s value is compared with the current minimum or maximum, updating the respective variable when a smaller or larger value is encountered. The ave() function sums all item values during traversal and divides the total by the number of items, providing the average. Proper handling of empty bags is also crucial; in such cases, functions should return a sentinel value or handle the scenario gracefully, possibly by returning 0, -1, or throwing an exception.

Once the functions are implemented, testing them with specific data sets is necessary. Based on the assignment, two bags are created: Bag A with items 8, 4, 5, 6, 1, 3, and Bag B with items 4, 6, 9, 2. The program then outputs the minimum, maximum, and average values for each bag using cout statements, demonstrating that the functions work correctly and consistently across different data sets. Ensuring correctness includes validating the results against manual calculations: for Bag A, min is 1, max is 8, and average is (8+4+5+6+1+3)/6 = 27/6 = 4.5; for Bag B, min is 2, max is 9, and average is (4+6+9+2)/4 = 21/4 = 5.25.

It is also worth noting that modifications from strings to integers influence other parts of the codebase, such as node struct definitions and method implementations. Careful refactoring ensures that the data structures are consistent and that the code remains functional and efficient. Proper testing and validation confirm the correctness of these modifications, leading to a robust extension of the linked list bag implementation as per the assignment’s requirements.

References

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