Railway Reservation System - Web Application

A modern web-based railway reservation system with a beautiful GUI, implementing core Data Structures and Algorithms concepts using React and Node.js.

Features

User Interface

• Modern Web GUI: Beautiful, responsive interface built with React
• Real-time Updates: Live seat availability and booking status
• Multiple Views: Trains, Booking, My Bookings, and Search tabs
• Visual Feedback: Success/error messages and loading states

Functionality

• View Trains: Browse all available trains with routes and fares
• Book Tickets: Select train, enter passenger details, instant booking
• Cancel Bookings: Cancel tickets with PNR and automatic refunds
• Search by PNR: Find booking details quickly
• Seat Management: Automatic seat allocation and tracking

Data Structures & Algorithms

Backend (Node.js/Express)

1. Linked List Implementation: Custom LinkedList class for managing bookings
   • BookingNode class with next pointer
   • Insert, delete, find, and traverse operations
2. Arrays: Train data storage and seat tracking
3. Linear Search: Train and booking lookup algorithms
4. Dynamic Memory: Node creation and deletion

Frontend (React)

• State management with React hooks
• Component-based architecture
• Real-time data synchronization

Tech Stack

• Backend: Node.js, Express.js
• Frontend: React (Vite), CSS3
• Data Structures: Custom Linked Lists, Arrays
• API: RESTful endpoints

API Endpoints

• GET /api/trains - Get all trains
• GET /api/bookings - Get all bookings
• GET /api/bookings/:pnr - Search booking by PNR
• POST /api/book - Book a ticket
• DELETE /api/bookings/:pnr - Cancel booking

How to Run

The application runs automatically. Click the "Run" button or use:

npm run dev

This starts both the backend server (port 3000) and frontend (port 5000) concurrently.

Sample Trains

• 101 - Rajdhani Express (Delhi → Mumbai) - ₹1500
• 102 - Shatabdi Express (Delhi → Chandigarh) - ₹800
• 103 - Duronto Express (Kolkata → Delhi) - ₹1200
• 104 - Garib Rath (Mumbai → Bangalore) - ₹900
• 105 - Jan Shatabdi (Chennai → Hyderabad) - ₹600

Project Structure

/
├── server.js              # Express backend with DSA implementations
├── client/                # React frontend
│   ├── src/
│   │   ├── App.jsx       # Main React component
│   │   └── App.css       # Styling
│   └── vite.config.js    # Vite configuration
├── package.json          # Dependencies and scripts
└── README.md            # This file

Usage

1. View Trains: See all available trains with seat availability
2. Book Ticket: Select a train, fill passenger details, get instant PNR
3. My Bookings: View all current reservations in a table
4. Search PNR: Enter PNR to view booking details
5. Cancel: Click cancel button to remove booking and get refund

The system features proper state management, error handling, and a beautiful user interface!