Thanks to visit codestin.com
Credit goes to github.com

Skip to content

【Star us and watch this project grow! 🌱⭐️】Collection of algorithm problems and solutions from ByteDance MarsCode Youth Training Camp (Winter 2024-2025). This repository contains coding challenges and their implementations used in the camp's entrance assessment.

License

Notifications You must be signed in to change notification settings

ChanMeng666/juejin-algorithm-practice

Repository files navigation

Algorithm Practice Banner

🚀 ByteDance MarsCode Algorithm Practice

Comprehensive Algorithm Training Collection for MarsCode Youth Camp

A comprehensive collection of 81+ algorithm problems and solutions designed for the ByteDance MarsCode Youth Training Camp.
Features detailed explanations, optimized Python solutions, and real-world application scenarios.
Perfect for algorithm learning, interview preparation, and competitive programming.

🎯 Start Practicing · 📚 Problem Categories · 📖 Documentation · 🤝 Contributing


[🚀 Explore Problems 🚀][#-problem-categories]



Share This Repository

⚡ Accelerating algorithm mastery through structured practice and comprehensive solutions.

📸 Project Overview

[!TIP] This repository contains meticulously crafted algorithm problems with detailed explanations and optimized solutions.

Algorithm Categories

Comprehensive coverage of algorithm fundamentals and advanced topics

String Processing Dynamic Programming Array Manipulation

String Processing, Dynamic Programming, and Array Manipulation Problems

Algorithm Categories Covered:

Important

This repository is designed for the ByteDance MarsCode Youth Training Camp and serves as a comprehensive resource for algorithm learning and interview preparation. It features 81+ carefully selected problems covering fundamental to advanced algorithm concepts.

📑 Table of Contents

TOC


🌟 Introduction

Welcome to the ByteDance MarsCode Algorithm Practice repository! This comprehensive collection is specifically designed for participants of the ByteDance MarsCode Youth Training Camp, offering a structured approach to algorithm learning and problem-solving.

Whether you're preparing for technical interviews, participating in competitive programming, or simply looking to strengthen your algorithmic thinking, this repository provides carefully curated problems with detailed explanations and optimized solutions.

Note

  • Python 3.6+ recommended for running solutions
  • Each problem includes detailed problem statement, solution approach, and complexity analysis
  • Problems are organized by difficulty and topic for systematic learning
  • All solutions are tested and optimized for performance
📚 Learn 💡 Practice 🎯 Master
Comprehensive explanations 81+ diverse problems Interview preparation
Step-by-step solutions Real-world scenarios Competitive programming

Tip

⭐ Star this repository to bookmark your algorithm learning journey and stay updated with new problems!

✨ Key Features

🎯 Comprehensive Problem Collection

  • 81+ Algorithm Problems: Carefully selected from basic to advanced levels
  • Detailed Explanations: Each problem includes comprehensive problem analysis
  • Optimized Solutions: Python implementations with optimal time and space complexity
  • Real-world Scenarios: Problems based on practical applications and interview questions

📚 Educational Excellence

  • Step-by-step Approach: Clear problem-solving methodology
  • Complexity Analysis: Time and space complexity for each solution
  • Multiple Approaches: Different solution strategies where applicable
  • Best Practices: Clean, readable, and maintainable code

🔧 Developer-Friendly

  • Organized Structure: Problems categorized by topics and difficulty
  • Easy Navigation: Consistent naming and folder structure
  • Quick Reference: Problem titles and categories clearly labeled
  • Testing Support: Example inputs and expected outputs provided

🛠️ Problem Categories

Our algorithm collection covers essential computer science topics:

Core Data Structures

  • 🔢 Array Manipulation: Finding unique elements, subarray problems
  • 🔗 String Processing: Pattern matching, transformation, encoding/decoding
  • 📊 Mathematical Problems: Number theory, combinatorics, statistical analysis

Advanced Algorithms

  • 🎯 Dynamic Programming: Optimization problems, sequence analysis
  • 🌳 Graph Theory: Path finding, traversal algorithms
  • 🔍 Search & Sort: Binary search, custom sorting algorithms
  • 🎮 Game Theory: Strategic decision making, probability

Practical Applications

  • 🧬 Bioinformatics: DNA sequence analysis, string distance
  • 💰 Financial Modeling: Stock trading, optimization problems
  • 🎲 Gaming Logic: Card games, board games, strategy problems
  • 📈 Data Analysis: Statistical calculations, ranking algorithms
Problem Distribution

Balanced distribution from beginner to advanced levels

🏗️ Repository Structure

📁 juejin-algorithm-practice/
├── 📂 juejin1-10/           # Problems 1-10 (Basics)
│   ├── 📄 juejin1.md        # Problem description
│   ├── 🐍 juejin1.py        # Python solution
│   └── ...
├── 📂 juejin11-20/          # Problems 11-20 (Intermediate)
├── 📂 juejin21-30/          # Problems 21-30 (String & Array)
├── 📂 juejin31-40/          # Problems 31-40 (Dynamic Programming)
├── 📂 juejin41-50/          # Problems 41-50 (Advanced Algorithms)
├── 📂 juejin51-60/          # Problems 51-60 (Mathematical)
├── 📂 juejin61-70/          # Problems 61-70 (Graph & Tree)
├── 📂 juejin71-80/          # Problems 71-80 (Optimization)
├── 📂 juejin81-90/          # Problems 81-90 (Expert Level)
├── 📄 README.md             # This documentation
└── 📄 LICENSE               # MIT License

File Structure Convention

Each problem follows a consistent structure:

  • juejinX.md: Detailed problem description, examples, and analysis
  • juejinX.py: Clean, optimized Python solution with comments

📊 Statistics

Metric Value Description
🎯 Total Problems 81+ Comprehensive problem collection
🐍 Python Solutions 81+ Optimized implementations
📚 Categories 10+ Diverse algorithm topics
⏱️ Avg. Solve Time 15-45 min Per problem (varies by difficulty)
🎓 Skill Level Beginner to Expert Progressive difficulty curve

Problem Difficulty Distribution:

  • 🟢 Beginner (1-20): 25% - Foundation building
  • 🟡 Intermediate (21-50): 40% - Core concepts
  • 🟠 Advanced (51-70): 25% - Complex algorithms
  • 🔴 Expert (71-81): 10% - Interview-level challenges

🚀 Getting Started

Prerequisites

Important

Ensure you have Python installed on your system:

  • Python 3.6+ (Download)
  • Text Editor (VS Code, PyCharm, or any preferred IDE)
  • Git for cloning the repository (Download)

Quick Start

1. Clone the Repository

git clone https://github.com/ChanMeng666/juejin-algorithm-practice.git
cd juejin-algorithm-practice

2. Explore Problems

# Navigate to any problem set
cd juejin1-10

# Read a problem description
cat juejin1.md

# Run the solution
python juejin1.py

3. Start Learning

Choose your learning path:

  • Beginner: Start with juejin1-10/
  • Intermediate: Jump to juejin21-30/
  • Advanced: Challenge yourself with juejin51-60/

Running Solutions

Each Python file can be executed directly:

# Run individual solutions
python juejin1.py
python juejin25.py
python juejin55.py

# Expected output: Test results and verification

📖 Usage Guide

Reading Problem Descriptions

Each problem file (.md) contains:

  1. Problem Statement: Clear description of the challenge
  2. Input/Output Examples: Sample test cases
  3. Constraints: Input limitations and requirements
  4. Solution Approach: Step-by-step methodology
  5. Complexity Analysis: Time and space complexity
  6. Code Implementation: Detailed solution walkthrough

Understanding Solutions

Each Python solution (.py) includes:

def solution(input_params):
    """
    Problem-specific solution with optimized approach
    
    Args:
        input_params: Problem input parameters
    
    Returns:
        Expected output based on problem requirements
    
    Time Complexity: O(n) or as specified
    Space Complexity: O(1) or as specified
    """
    # Implementation here
    pass

# Test cases
if __name__ == "__main__":
    # Verification with sample inputs
    assert solution(test_input) == expected_output

Learning Methodology

  1. Read & Understand: Study the problem statement thoroughly
  2. Plan Your Approach: Think through the solution before coding
  3. Implement: Write your solution in Python
  4. Compare: Check against the provided optimized solution
  5. Analyze: Understand time/space complexity trade-offs

🎯 Learning Path

📈 Beginner Path (Problems 1-20)

Start here if you're new to algorithms:

  • Basic array operations
  • Simple string manipulations
  • Fundamental mathematical problems
  • Introduction to algorithmic thinking

📊 Intermediate Path (Problems 21-50)

Build core algorithm skills:

  • Dynamic programming basics
  • String algorithms
  • Number theory
  • Problem-solving patterns

🔬 Advanced Path (Problems 51-80)

Master complex algorithms:

  • Advanced dynamic programming
  • Graph algorithms
  • Optimization problems
  • Real-world applications

🏆 Expert Path (Problems 81+)

Challenge yourself with:

  • Complex system design problems
  • Multi-step optimization
  • Interview-level challenges
  • Competitive programming style

⌨️ Development

Local Development Setup

Environment Setup:

# Clone repository
git clone https://github.com/ChanMeng666/juejin-algorithm-practice.git
cd juejin-algorithm-practice

# Create virtual environment (optional)
python -m venv venv
source venv/bin/activate  # Linux/Mac
# or
venv\Scripts\activate     # Windows

# Verify Python version
python --version

Adding New Problems

To contribute a new problem:

  1. Create problem description file: juejinX.md
  2. Implement solution file: juejinX.py
  3. Follow the existing format and structure
  4. Include comprehensive test cases
  5. Add complexity analysis

Problem Template:

# Problem Title

## Problem Description
[Detailed problem statement]

## Examples
[Input/output examples]

## Solution Approach
[Step-by-step explanation]

## Code Implementation
[Python solution]

## Complexity Analysis
- Time Complexity: O(...)
- Space Complexity: O(...)

Testing Solutions

# Run individual problem
python juejinX.py

# Verify all solutions in a directory
for file in juejin1-10/*.py; do
    echo "Testing $file"
    python "$file"
done

🤝 Contributing

We welcome contributions to improve this algorithm collection! Here's how you can help:

How to Contribute

1. Fork & Clone

git clone https://github.com/your-username/juejin-algorithm-practice.git
cd juejin-algorithm-practice

2. Create a Branch

git checkout -b feature/new-problem-solution

3. Make Your Changes

  • Add new problems with solutions
  • Improve existing explanations
  • Fix bugs or optimize solutions
  • Enhance documentation

4. Submit a Pull Request

  • Provide clear description of changes
  • Include test cases for new problems
  • Ensure code follows Python best practices

Contribution Guidelines

Code Quality:

  • Follow PEP 8 Python style guidelines
  • Include comprehensive docstrings
  • Add meaningful comments for complex logic
  • Ensure optimal time/space complexity

Documentation:

  • Clear and concise problem descriptions
  • Include multiple examples
  • Provide step-by-step solution explanation
  • Add complexity analysis

Problem Requirements:

  • Original or educationally valuable problems
  • Multiple test cases provided
  • Solution verified and optimized
  • Appropriate difficulty classification

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

You are free to:

  • ✅ Use for commercial purposes
  • ✅ Modify and distribute
  • ✅ Use in private projects
  • ✅ Use for educational purposes

👥 Author

Chan Meng
Chan Meng

🚀 Creator & Maintainer
💻 Algorithm Enthusiast

Connect with the Author:


🎯 About ByteDance MarsCode Youth Training Camp

The MarsCode Youth Training Camp is a comprehensive technical training program by ByteDance, designed to develop practical programming skills and algorithmic thinking. This repository serves as a supplementary resource for camp participants and the broader programming community.

🚀 Key Training Objectives:

  • Master fundamental algorithms and data structures
  • Develop problem-solving methodologies
  • Prepare for technical interviews
  • Build confidence in competitive programming

📚 Related Resources:


Star this repository if it helps your algorithm learning journey!

📖 Share with friends who are also learning algorithms and data structures!

🤝 Contribute to help others in their programming journey!



🌟 Building tomorrow's tech leaders through structured algorithm practice 🌟


About

【Star us and watch this project grow! 🌱⭐️】Collection of algorithm problems and solutions from ByteDance MarsCode Youth Training Camp (Winter 2024-2025). This repository contains coding challenges and their implementations used in the camp's entrance assessment.

Topics

Resources

License

Code of conduct

Stars

Watchers

Forks

Releases

No releases published

Sponsor this project

Packages

No packages published

Languages