← Projects

🧠 Algorithms & Computer Science

Deep logic work — from formal language theory to cryptography. These projects prove I understand what's under the hood.

projects
🤖 Automata Theory

NFA → DFA Conversion Engine

A deep-logic Java tool that converts Regular Expressions into Minimized Deterministic Finite Automata — with automated Graphviz state machine visualizations. Built from scratch using formal language theory.

  • Parses regex into NFA using Thompson's construction
  • Converts NFA → DFA via subset construction algorithm
  • Minimizes DFA using Hopcroft's algorithm
  • Generates Graphviz DOT files for visual state diagrams
Java Automata Theory Graphviz Formal Languages Graph Algorithms
View on GitHub ↗
// concepts used
⚙️
Thompson's Construction Converts a regex into an NFA using a recursive algorithm with epsilon transitions.
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Subset Construction Converts NFA to DFA by computing epsilon-closures and tracking sets of NFA states as DFA states.
✂️
DFA Minimization Reduces states by merging equivalents using partition refinement (Hopcroft's).
📊
Graphviz Visualization Outputs DOT language files to render clean, readable state machine diagrams automatically.
🔐 Cryptography

Encryption Suite

Java encryption suite built from scratch with classical ciphers and symmetric algorithm logic. Demonstrates secure data transformation using custom cipher workflows, bitwise operations, and key-based encoding.

  • Caesar & Vigenère cipher implementations
  • Symmetric key operations with XOR and padding
  • Custom bitwise transformation logic
  • Hands-on cryptography foundations
Java Cryptography Bit Manipulation Algorithms
View on GitHub ↗
🏨 Java Systems

Hotel Management System

Java hotel management application built to manage room bookings, guest check-in/out, billing, and room inventory with polished system workflows.

  • Room booking and reservation management
  • Guest check-in/check-out workflows
  • Room availability and billing logic
  • Clean OOP architecture throughout
Java OOP Business Logic
View on GitHub ↗
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more projects
coming soon...