lynxrv21/leetcode

leetcode

This repository contains my solutions to some of the problems from LeetCode. The solutions are organized by problem categories.

Table of Contents

• How to Use
• Directory Structure
• Problem List
• Resources
• Contributing

How to Use

1. Clone the repository:

   git clone https://github.com/lynxrv21/leetcode.git

2. Get random problem to solve:

   python generate_problem.py

   Optionally, specify complexity or specific problem name:

   python get_problem.py [-h] [-c {easy,medium,hard}] [-p PROBLEM]

3. New template file will be generated, with problem description and test cases

Directory Structure

leetcode/
├── arrays
│   ├── 001_two_sum.py
│   ├── 015_3sum.py
│   ├── 121_best_time_to_buy_and_sell_stock.py
│   ├── 217_contains_duplicate.py
│   ├── 242_valid_anagram.py
│   └── utils.py
├── linked_lists
│   ├── 002_add_two_numbers.py
│   ├── 021_merge_two_sorted_lists.py
│   ├── 141_linked_list_cycle.py
│   ├── 206_reverse_linked_list.py
│   └── utils.py
├── stack
│   └── 020_valid_parentheses.py
├── trees
│   ├── 100_same_tree.py
│   ├── 104_maximum_depth_of_binary_tree.py
│   ├── 226_invert_binary_tree.py
│   └── utils.py
├── two_pointers
│   └── 125_valid_palindrome.py
├── Makefile
├── README.md
├── get_problem.py
├── leetcode.py
└── run_tests.py

Problem List

Arrays

• 001_two_sum.py *
• 015_3sum.py **
• 121_best_time_to_buy_and_sell_stock.py *
• 217_contains_duplicate.py *
• 242_valid_anagram.py *

Linked Lists

• 002_add_two_numbers.py **
• 021_merge_two_sorted_lists.py *
• 141_linked_list_cycle.py *
• 206_reverse_linked_list.py *

Stack

• 020_valid_parentheses.py *

Trees

• 100_same_tree.py *
• 104_maximum_depth_of_binary_tree.py *
• 226_invert_binary_tree.py *

Two Pointers

• 125_valid_palindrome.py *

Resources

NeetCode - coding challenges and some courses

System Design Primer - Guide to system design interviews

TechDummies - System design video guides

gkcs - Another system design and algorithms YT channel

Grokking the System Design Interview - Online course (paid)

Contributing

Contributions are welcome! If you have solutions or improvements to existing ones, feel free to submit a pull request. Please check the code before submitting:

python run_tests.py
pip install black ruff
make fmt