Assignment 3 C Classes CS246 Fall 2021

Assignment 3 C Classes Cs246 Fall 2021assignment 3 C Classesd

Implement a comprehensive set of C++ classes and functions based on the provided assignment prompts, including a Rational class, a Polynomial class using Rational coefficients, and a TString class representing large strings with tree-based structure. You will need to design and implement data structures supporting various operations such as arithmetic, input/output formatting, polynomial addition/multiplication/division, and string insertion and iteration. Additionally, develop test suites for each program, ensuring correctness and robustness before final submission. Follow specified input/output formats, leverage provided skeleton code, and adhere to coding standards outlined in the guidelines.

Paper For Above instruction

The assignment involves creating three principal classes in C++ that demonstrate object-oriented programming principles, encapsulation, operator overloading, dynamic memory management, and data structure implementation. These classes are Rational, Polynomial, and TString, each serving to showcase different aspects of programming complexity and design.

Development of a Rational Class

The first part of the assignment requires designing a Rational class that encapsulates rational numbers. This class must integrate features such as constructors, arithmetic operations (+, -, *, /), and unary negation. A significant aspect is implementing a simplify() method that reduces rational numbers to their simplest form and ensures negative signs are always held by the numerator. Input/output operators must adhere to specific formatting rules, ensuring rational numbers are read and written correctly, including handling whitespace, integer-only forms, and negative values. This class will underpin operations in the subsequent Polynomial class.

Implementation of a Polynomial Class

The second class builds on Rational to represent polynomials with Rational coefficients. The polynomial class utilizes dynamic arrays stored on the heap to allow variable polynomial degrees, with each coefficient represented as a Rational. The class must support polynomial addition, subtraction, multiplication, and division, including computing quotient and remainder via long division. Operator overloading is necessary for +, -, *, /, and %. The input operator accepts terms with rational coefficients and exponents, with the output formatted to omit zero coefficients and handle special cases for exponents one and zero. Deep copy semantics are vital, and the class must handle memory allocation and deallocation correctly to prevent leaks. Testing involves constructing polynomials, performing operations, and verifying outputs against expected results.

Tree-Based String Class (TString)

The third component tasks you with implementing a tr ee-structured string class to efficiently handle large strings with frequent, arbitrary modifications. The TString class maintains a binary tree where each node holds a string segment and size data for its subtree. The insert() method inserts strings into arbitrary positions by traversing the tree to locate insertion points, splitting nodes when necessary, and updating subtree sizes. Concatenation combines two TStrings efficiently by linking their nodes, and operator[] provides character-level access through traversal. An iterator class affords iteration over individual characters, enabling ranged for-loops. Pretty-print functions visualize the tree structure for debugging. The class supports deep copying to ensure copies are independent. The implementation emphasizes avoiding string concatenation, favoring tree splits and node restructures to optimize performance for large data.

Testing and Submission Guidelines

For each class, a test harness is provided (a3q1.cc, a3q2.cc, a3q3.cc) to facilitate testing. You are responsible for designing comprehensive test suites (suiteq1.txt, suiteq2.txt, suiteq3.txt) that verify correctness of all functionalities, especially edge cases. These suites must be zipped with associated input and output files into specified archive formats (a3q1.zip, a3q2a.zip, a3q2b.zip, a3q3a.zip, a3q3b.zip). Final implementation files include the class definitions (.h), implementation (.cc), Makefile, and any additional classes. All code must conform to style and documentation standards established by the course.

Conclusion

This assignment demands a robust application of object-oriented programming, dynamic memory management, operator overloading, and complex data structures. Success depends on careful planning of class interfaces, meticulous implementation respecting input/output formats, and thorough testing. The classes you develop will serve as practical demonstrations of core C++ features with emphasis on correctness, efficiency, and maintainability, preparing you for advanced programming challenges.

References

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