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Competitive Programming

This repository contains my solutions, templates, and utilities for competitive programming in C++ and Java.

Structure

  • /java/: Contains solutions, templates, and testing for java files.

    • /java/src/main/java/solutions/: Java solutions.
    • /java/src/test/: Unit tests for problems (optional).
    • /java/src/main/java/templates/: Java templates for quick problem setup.
    • /java/src/input/ and /java/src/output/: Sample input/output files for local java testing.
    • /java/pom.xml: Maven build file for dependency management.

  • /cpp/: Conains solutions and templates for C++ files.

    • /cpp/solutions/: C++ solutions.
    • /cpp/templates/: C++ templates for quick problem setup

Local I/O testing for Java

  1. Configure the following lines at the top of your ProblemName.java file and set LOCAL to true to allow for local testing:
    boolean LOCAL = true;

        BufferedReader br;
        PrintWriter out;

        if (LOCAL) {
            br = new BufferedReader(new FileReader("java/src/input/problemname.in"));
            out = new PrintWriter(new FileWriter("java/src/output/problemname.out"));
        } else {
            br = new BufferedReader(new FileReader("problemname.in"));
            out = new PrintWriter(new FileWriter("problemname.out"));
        }

  1. Create the problemname.in file in the java/src/input dir and leave your empty problemname.out file in the java/src/output

  2. Run your problemname.java file and check the problemname.out file for results

JUnit Testing

Prerequisites: Maven installed, Debugger for Java Extension installed (this is a VSCode setup)

  1. Create a [problemname]Test.java file inside the src/test/java dir

  2. Copy and paste the template from src/main/java/templates/TestTemplate.java and configure it to your liking

  3. Run the test using the Testing sidebar or:

mvn test

Usage

  1. Clone the repository: 
    git clone <repo-url>
cd competitive-programming
  2. Compile a solution in C++: 
      g++ -std=c++17 -O2 name.cpp -o name -Wall
  3. Run a solution in C++: 
    ./name
  4. Compile a solution in java: 
    javac src/solutions/path/to/ProblemName.java
  5. Run a solution in java: 
    java -cp src/main/java path.to.ProblemName

Contributing

Contributions are welcome! Please follow the existing structure and naming conventions. Submit a pull request with your changes.

License

This project is licensed under the MIT License.