LeetCode Solutions (C++)

A collection of LeetCode problem solutions implemented in modern C++ (C++17+). Each problem lives in its own folder and may include multiple approach variants and a short problem README.

Quick start

• Build a single solution using g++:

g++ -std=c++17 -O2 path/to/problem/solution.cpp -o solution && ./solution

On Windows PowerShell (if g++ is in PATH):

g++ -std=c++17 -O2 .\0001-two-sum\solution.cpp -o solution.exe; .\solution.exe

Repository layout

• Top-level directories are named like 0001-two-sum/, 0002-add-two-numbers/, etc.
• Inside a problem folder you typically find:
  • solution.cpp — main solution
  • other variants (e.g. brute_force.cpp, two_pointer.cpp, hashing.cpp)
  • README.md — short explanation, approach and complexity

How to add a new problem

1. Create a folder with a zero-padded number and short name (e.g. 0123-my-problem/).
2. Add solution.cpp (and other variants if needed).
3. Add README.md describing the approach, time and space complexity, and edge cases.

Notes and conventions

• Use readable, idiomatic C++ and prefer clarity over clever micro-optimizations.
• Solutions that require input should read from stdin so they can be tested with redirection.

Contributing

• Fork, add or update a problem folder, then open a pull request with a short description.

License

• No license is included. Add a LICENSE file if you want to set reuse terms.

That's it - simple, searchable C++ solutions intended for study and practice.