OR Solver

Simple Operations Research solver via web with interactive step-by-step solutions.

Live Demo: or-solver.arnebin.dev

Solver Methods

• Linear Programming — Simplex method with graphical feasible region
• Integer Programming — Branch and bound with tree visualization
• Transportation — Vogel Approximation and Northwest Corner methods
• Assignment — Hungarian algorithm with cost matrix visualization
• Goal Programming — Multi-objective optimization
• Sensitivity Analysis — Dual values and shadow prices

Stack

• Backend: Python / FastAPI
• Frontend: Alpine.js, Chart.js, Plotly, Tailwind CSS
• Solvers: PuLP (LP/IP), custom algorithms (transportation, assignment, goal)

Quick Start

npm install
npm run css
pip install -r requirements.txt
python -m uvicorn backend.main:app

Open http://localhost:8000 in your browser.

API Endpoints

Method	Endpoint	Description
POST	/api/simplex	Linear programming (Simplex)
POST	/api/integer-programming	Integer programming
POST	/api/assignment	Assignment problem
POST	/api/vogel	Vogel Approximation
POST	/api/northwest-corner	Northwest Corner
POST	/api/goal-programming	Goal programming
POST	/api/sensitivity	Sensitivity analysis
POST	/api/dual	Dual formulation
GET	/api/health	Health check