Coding Exercises Repository - boredom becomes code

A collection of coding exercises, challenges, and mini-projects I work on for fun. I take simple problems and turn them into more educational, visual, or interactive versions.

Projects

Project	Description	Stack
pin_extractor	A positional word-length cipher algorithm with a PyQt6 step-through visualizer	Python, PyQt6
number_generator	A function that returns a string of numbers from 1 to n separated by spaces	Python
med_data_validator	Medical data validation utility	Python
isbn_validator	ISBN-10 and ISBN-13 validation utility	Python
config_manager	User configuration manager for managing settings like theme and notifications	Python, PyQt6
instrument_inventory	FreeCodeCamp instrument inventory project	Python
planet_class	Planet class demonstrating OOP with validation	Python
email_simulator	OOP email system simulator with users, inboxes, and message management	Python
budget_app	Budget tracker with OOP, mutation testing, and interactive learning CLI	Python
salary_tracker	Employee salary tracker with level-based tiers (In Progress)	Python
game_char_stats_tracker	Game character stats manager with property validation	Python
media_catalogue	Movie and TV series catalogue with validation, filtering, and PySide6 GUI	Python, PySide6
mutant_assistant	Mutation testing helper with test generation CLI (In Progress)	Python
discount_calculator	Discount calculator using Strategy Pattern with ABC	Python
player_interface	Game player movement with ABC and inheritance	Python
polygon_area_calculator	Shape calculator with Rectangle/Square inheritance (methods version + properties version)	Python
linked_list	Singly linked list implementation with add and remove operations	Python
hash_table	Hash table with collision handling using nested dictionaries	Python
binary_search	Binary search algorithm (TODO)	Python
bisection	Square root calculator using bisection method (binary search for continuous values)	Python
quicksort	Divide and conquer sorting: pick pivot, split smaller/larger, recursively sort	Python
selection_sort	Find minimum in unsorted portion, swap with first unsorted element, repeat	Python
screenshot_organizer	Scans Mac desktop for screenshots, moves them to a folder, and optionally deletes them	Python
web_scraper	Extract data from websites using CSS selectors (CLI + PyQt6 GUI)	Python, PyQt6

Lessons

Lesson	Description	Stack
algorithms	Big O, data structures (list vs deque), maps, hash maps, and sets	Python
classes_objects	Classes, objects, methods, attributes, inheritance, name mangling, ABCs, polymorphism, and dataclasses	Python
error_handling	Debugging and exception handling examples	Python

Interactive Lessons

Each lesson folder includes an interactive_lessons/ directory with a PySide6 app for visual, hands-on learning.

# Algorithms - hash tables, Venn diagrams, list vs deque visualization
cd python/lessons/algorithms/interactive_lessons && python main.py

# Classes & Objects - class diagrams, inheritance visualization, attribute inspector
cd python/lessons/classes_objects/interactive_lessons && python main.py

# Error Handling - try/except flowcharts, debugger simulator
cd python/lessons/error_handling/interactive_lessons && python main.py

LeetCode & DSA

Structured practice with lessons, practice problems, and interactive visualizations.

View all problems & progress →

Problem	Description	Difficulty
two_sum	Find two numbers that add up to a target using a hashmap	Easy
add_two_numbers	Add two numbers represented as linked lists in reverse order	Medium
longest_substring	Longest substring without repeating characters	Medium

Learning Labs

Interactive PyQt6 application for visualizing algorithms step-by-step.

cd python/leetcode && python launch_learning_labs.py

About

This is my "I'm bored" repository. When I find an interesting coding problem or exercise, I like to:

• Solve the core problem
• Add detailed comments and educational versions
• Build visual tools to understand the algorithm
• Over-engineer it for fun

Each project has its own README with documentation, usage instructions, and explanations.