CodeBattle

Web platform to practice problem solving, algorithms and data structures.

The main focus of this platform is to force participants to use best practices while solving programming problems/challenges to get the most outcome from their training.

The problem:

Many competitive programmers follow wrong ways/happites while solving problems and the most two common things are:

1. NOT taking enough time checking/testing correctness of their solutions and submit their solution once they got a working idea from the first glance.
2. NOT focusing on a problems set but instead distracting themselves by looking regularly on the standings and what others are doing, and this my lead to some frustration during a contest.

The solution:

1. Limiting number of submissions per problem in a contest (max 2) to let participants think more about correctness of a solution before submit, otherwise submission for tried problem will be closed and getting penalty.
2. Standings are published after the end of a contest to just compete against a problems set and focus on them only.

NOTE: This project is currently in progress and planning to be published to the world soon...

Features:

• Login
• Register
• User profile
• Problems
• Contests
• Standings
• Solution tutorial (in progress...)

Admins only can create problems and contests.

1. Problem creation:
   • Problem name.
   • Main Description (story) section.
   • Input description section.
   • Output description section.
   • Additional notes section.
   • Upload sample/test cases files (currently just one sample and one test files are supported).
   • Choosing file comparing checker type.
     • Line Checker.
     • Token Sequence Checker.
     • ... planning to allow for customized checkers.
2. Contest creation:
   • Contest name.
   • Adding created problems to contest.
   • Start date.
   • Duration in minutes.
   • Contest privaciy (public or private). NOTE: private is not supported currently but it's in the plan.

A participant can:

1. Show all upcoming/running/archieved contests.
2. Register in a contest.
3. Submit a problem.
4. Show standings after a contest ends immediatly.
5. Show problems solution tutorial after a contest ends immediatly.

Problem submission:

• Currently it's just output files comparing.
• Could make it submit source code in the future.
• Submission steps:
  1. Download input file.
  2. Upload output file.
  3. Recieving judgement verdict.

Standings:

• Ranking criteria is based on the ICPC style.

Technologies used:

• Java
• Spring (MVC, Data JPA, Security)
• MySQL
• Hibernate
• Thymeleaf
• Bootstrap
• JavaScript
• JQuery
• MathJax
• IntelliJ IDEA

If you have any idea, or want to contribute to this project please don't hesitate for that and it will be so appreciated.