Repo brief: haoel/leetcode

Generated by RepoPilot · document generated 2026-09-13 · concise human review Evidence snapshot · analyzed 2026-09-13T09:35:32.202Z · commit 125c4d8d7e3a

Verdict

Mixed — Stale — last commit 2y ago

• 8 active contributors

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests

What it is

A comprehensive LeetCode problem solutions repository with 1396+ C++ implementations, 132+ Java, and smaller Python/Go/Shell collections. It serves as a curated reference library where each algorithm problem (3Sum, LRU Cache, BST iteration, etc.) has a dedicated directory with standalone solution files, enabling developers to study, compare, and reuse optimized implementations across multiple languages. Monorepo organized by language: algorithms/cpp/ contains 1396+ solutions each in a problem-named subdirectory (e.g., algorithms/cpp/3Sum/3Sum.cpp, algorithms/cpp/LRUCache/LRUCache.cpp), with parallel algorithms/java/src/ structure. Each problem gets its own folder and implementation…

Start here

Open these first:

• README.md — Documents the entire LeetCode problem set index with 1900+ problems, solution links, and difficulty ratings—essential…
• algorithms/cpp/3Sum/3Sum.cpp — Foundational two-pointer algorithm pattern used throughout classic array/string problems; understand this to grasp the…
• algorithms/cpp/LRUCache/LRUCache.cpp — Core data structure design pattern combining hash map and doubly-linked list; demonstrates the codebase's approach to…
• algorithms/cpp/binaryTreeMaximumPathSum/binaryTreeMaximumPathSum.cpp — Advanced tree traversal with DFS; represents the recursive pattern strategy used across all tree-based problems in the…
• algorithms/cpp/dynamicProgramming/coinChange.cpp — Classic DP formulation with state transition; key reference for understanding bottom-up and memoization patterns across…

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

git clone https://github.com/haoel/leetcode.git
cd leetcode
ls algorithms/cpp/  # Browse C++ solutions
ls algorithms/java/src/  # Browse Java solutions
cat algorithms/cpp/3Sum/3Sum.cpp  # View a solution

No build/install step—this is a reference library. Pick a language directory and read .cpp or .java files directly.

Daily commands:

There is no 'run' step. This is a browsable reference library. To test a specific C++ solution: g++ -std=c++17 algorithms/cpp/3Sum/3Sum.cpp -o test && ./test. For Java: `javac algorithms/java/src/3Sum/ThreeSum.java &&…

…shortened for this brief.

Key cautions & unknowns

• Stale — last commit 2y ago
• Single-maintainer risk — top contributor 92% of recent commits
• No environment variables, build config, or runtime dependencies required. Key gotcha: file naming inconsistencies—some directories use camelCase (e.g., addAndSearchWord), others PascalCase (e.g., 3Sum), and…
• License evidence is incomplete or ambiguous.
• Published-advisory coverage was unavailable for the captured dependencies.
• Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

• Repository source
• Open issues
• Recent pull requests

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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