LeetCode Vault

My Algorithm Solutions Collection

Problem List • LeetCode Profile • Report Issue

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About This Repository

LeetCode Vault is a personal archive containing solutions from the LeetCode platform. This repository is structured solely to track learning progress and store code with a focus on cleanliness, edge-case handling, and complexity optimization.

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Directory Structure

leetcode-vault/
├── easy/       # Basic problems for data structure fundamentals
├── medium/     # Medium complexity algorithm problems
└── hard/       # Advanced optimization problems

Each file is named using the format [Problem_Number]_[Problem_Title].py
Example: 0001_two_sum.py

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Difficulty Levels

Difficulty	Description	Status
easy/	Basic problems for data structure fundamentals	Active
medium/	Medium complexity algorithm problems	Active
hard/	Advanced optimization problems	Active

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How to Run

Since this repository contains Python solution scripts without an external testing framework, you can run functions directly or by adding driver code at the bottom of any file.

# Clone the repository
git clone https://github.com/evan-william/leetcode-vault.git
cd leetcode-vault

# Run a specific file
python easy/0001_two_sum.py

Note: Some problems cannot be run locally. These rely on hidden server-side code (e.g. custom ListNode, TreeNode class definitions, or input drivers) that only exist on LeetCode's judge. For those, the file contains only the solution logic, test it directly on the LeetCode platform.

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Author

Evan William

• GitHub: @evan-william
• LinkedIn: Evan William

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Created to track the problem-solving journey.