A local C# console application for practicing LeetCode problems in your own IDE. Say goodbye to LeetCode's online editor and hello to VS Code!
- Local Development: Write solutions in VS Code with all your favorite extensions
- Multi-Language Support: Practice in C# or TypeScript — more languages can be added following the same pattern
- Automatic Scaffolding: Generate new C# problem files directly from LeetCode data with one command
- Automatic Testing: Built-in test runner with formatted output and performance stats
- Problem Management: Easy CLI commands to run, test, and manage problems
- Solution Resetting: Quickly reset one or all solutions back to their initial state
- Clean Output: Pretty-printed test results with pass/fail status
- .NET 10.0 SDK
- VS Code (recommended)
git clone <your-repo-url>
cd BeetCode
dotnet build# Generate a new problem file from LeetCode
dotnet run -- scaffold 1
# Run tests for a specific problem
dotnet run -- test 1
# Show problem info and run tests
dotnet run -- run 1
# Show just the problem description
dotnet run -- info 1
# List all available problems and your progress
dotnet run -- list
# Reset a solution
dotnet run -- reset 1
# Show help
dotnet run -- helpBeetCode/
├── Framework/
│ ├── LeetCodeClient.cs # Fetches problem data from LeetCode
│ ├── Problem.cs # Abstract base class for all problems
│ ├── ResetHelper.cs # Utility for resetting solutions
│ ├── ScaffoldGenerator.cs # Generates C# boilerplate from problem data
│ ├── TestCase.cs # Test case data structure
│ └── TestRunner.cs # Test execution engine
├── Problems/
│ ├── Problem001.cs # Two Sum
│ ├── Problem002.cs # Add Two Numbers
│ └── ... # More problems as you add them
├── Program.cs # CLI entry point
└── README.md # You are here!
Want to practice a new LeetCode problem? Use the scaffold command:
dotnet run -- scaffold 1This will automatically create a complete problem file with:
- Problem description, difficulty, and examples
- Method signature ready for your solution
- Integration into the test runner
Note: Some problems may require manual adjustment of test cases if the data format is complex.
- Scaffold a problem:
dotnet run -- scaffold 1 - Read the description:
dotnet run -- info 1 - Open the file: Edit
Problems/Problem001.cs - Write your solution: Replace the
NotImplementedException - Test it:
dotnet run -- test 1 - Celebrate: 🎉 (when all tests pass)
$ dotnet run -- test 1
Running tests for Problem 1: Two Sum
--------------------------------------------------
Example 1: PASS
Example 2: PASS
Example 3: PASS
--------------------------------------------------
Results: 3/3 tests passed
All tests passed! 🎉| Command | Description | Example |
|---|---|---|
scaffold <n> |
Generate problem file from LeetCode | dotnet run -- scaffold 1 |
test <n> |
Run tests for a problem | dotnet run -- test 1 |
run <n> |
Show info + run tests | dotnet run -- run 1 |
info <n> |
Show problem description | dotnet run -- info 1 |
list |
List all problems and progress | dotnet run -- list |
reset <n> |
Reset a specific solution | dotnet run -- reset 1 |
reset |
Reset ALL solutions (prompts) | dotnet run -- reset |
update-data |
Refresh local LeetCode problem cache | dotnet run -- update-data |
help |
Show help message | dotnet run -- help |
- Your IDE, Your Rules: Use VS Code with IntelliSense, debugging, and extensions
- Version Control: Track your solution progress with Git
- Offline Practice: No internet required once problems are set up
- Custom Testing: Add your own test cases beyond LeetCode examples
- Learning Focus: Clean, distraction-free environment for problem-solving
This is a personal practice tool, but feel free to:
- Suggest new framework features
- Report bugs or improvements
- Share your favorite problem templates
MIT License - Practice away! 🚀
Total Solved: 22
| Set | Easy | Medium | Hard | Total |
|---|---|---|---|---|
| 21 / 28 | 0 / 100 | 0 / 20 | 21 / 148 |
✅ 217 · Contains Duplicate
✅ 242 · Valid Anagram
✅ 1 · Two Sum
🔲 26 · Remove Duplicates from Sorted Array
🔲 27 · Remove Element
🔲 383 · Ransom Note
🔲 414 · Third Maximum Number
✅ 125 · Valid Palindrome
🔲 344 · Reverse String
✅ 121 · Best Time to Buy and Sell Stock
✅ 20 · Valid Parentheses
🔲 13 · Roman to Integer
🔲 14 · Longest Common Prefix
🔲 28 · Find the Index of the First Occurrence in a String
🔲 58 · Length of Last Word
🔲 168 · Excel Sheet Column Title
✅ 704 · Binary Search
✅ 206 · Reverse Linked List
✅ 141 · Linked List Cycle
✅ 21 · Merge Two Sorted Lists
✅ 226 · Invert Binary Tree
✅ 104 · Maximum Depth of Binary Tree
✅ 543 · Diameter of Binary Tree
✅ 110 · Balanced Binary Tree
✅ 100 · Same Tree
✅ 572 · Subtree of Another Tree
✅ 703 · Kth Largest Element in a Stream
✅ 1046 · Last Stone Weight
✅ 70 · Climbing Stairs
✅ 746 · Min Cost Climbing Stairs
🔲 252 · Meeting Rooms (Premium)
✅ 202 · Happy Number
🔲 66 · Plus One
🔲 9 · Palindrome Number
🔲 258 · Add Digits
✅ 412 · Fizz Buzz
🔲 136 · Single Number
🔲 191 · Number of 1 Bits
🔲 338 · Counting Bits
🔲 190 · Reverse Bits
🔲 268 · Missing Number
🔲 389 · Find the Difference
🔲 49 · Group Anagrams
🔲 347 · Top K Frequent Elements
🔲 238 · Product of Array Except Self
🔲 36 · Valid Sudoku
🔲 271 · Encode and Decode Strings (Premium)
🔲 128 · Longest Consecutive Sequence
🔲 167 · Two Sum II - Input Array Is Sorted
🔲 15 · 3Sum
🔲 11 · Container With Most Water
🔲 3 · Longest Substring Without Repeating Characters
🔲 424 · Longest Repeating Character Replacement
🔲 567 · Permutation in String
🔲 155 · Min Stack
🔲 150 · Evaluate Reverse Polish Notation
🔲 22 · Generate Parentheses
🔲 739 · Daily Temperatures
🔲 853 · Car Fleet
🔲 74 · Search a 2D Matrix
🔲 875 · Koko Eating Bananas
🔲 153 · Find Minimum in Rotated Sorted Array
🔲 33 · Search in Rotated Sorted Array
🔲 981 · Time Based Key-Value Store
🔲 143 · Reorder List
🔲 19 · Remove Nth Node From End of List
🔲 138 · Copy List With Random Pointer
🔲 2 · Add Two Numbers
🔲 287 · Find the Duplicate Number
🔲 146 · LRU Cache
🔲 235 · Lowest Common Ancestor of BST
🔲 102 · Binary Tree Level Order Traversal
🔲 199 · Binary Tree Right Side View
🔲 1448 · Count Good Nodes in Binary Tree
🔲 98 · Validate Binary Search Tree
🔲 230 · Kth Smallest Element in BST
🔲 105 · Construct Binary Tree from Preorder and Inorder
🔲 208 · Implement Trie (Prefix Tree)
🔲 211 · Design Add and Search Words Data Structure
🔲 973 · K Closest Points to Origin
🔲 215 · Kth Largest Element in an Array
🔲 621 · Task Scheduler
🔲 355 · Design Twitter
🔲 46 · Permutations
🔲 78 · Subsets
🔲 39 · Combination Sum
🔲 90 · Subsets II
🔲 40 · Combination Sum II
🔲 79 · Word Search
🔲 131 · Palindrome Partitioning
🔲 17 · Letter Combinations of a Phone Number
🔲 200 · Number of Islands
🔲 133 · Clone Graph
🔲 695 · Max Area of Island
🔲 417 · Pacific Atlantic Water Flow
🔲 130 · Surrounded Regions
🔲 994 · Rotting Oranges
🔲 286 · Walls and Gates (Premium)
🔲 207 · Course Schedule
🔲 210 · Course Schedule II
🔲 684 · Redundant Connection
🔲 323 · Number of Connected Components (Premium)
🔲 261 · Graph Valid Tree (Premium)
🔲 1584 · Min Cost to Connect All Points
🔲 743 · Network Delay Time
🔲 787 · Cheapest Flights Within K Stops
🔲 198 · House Robber
🔲 213 · House Robber II
🔲 5 · Longest Palindromic Substring
🔲 647 · Palindromic Substrings
🔲 91 · Decode Ways
🔲 322 · Coin Change
🔲 139 · Word Break
🔲 300 · Longest Increasing Subsequence
🔲 416 · Partition Equal Subset Sum
🔲 62 · Unique Paths
🔲 1143 · Longest Common Subsequence
🔲 309 · Best Time to Buy & Sell Stock with Cooldown
🔲 518 · Coin Change II
🔲 494 · Target Sum
🔲 97 · Interleaving String
🔲 72 · Edit Distance
🔲 53 · Maximum Subarray
🔲 55 · Jump Game
🔲 45 · Jump Game II
🔲 134 · Gas Station
🔲 846 · Hand of Straights
🔲 1899 · Merge Triplets to Form Target Triplet
🔲 763 · Partition Labels
🔲 678 · Valid Parenthesis String
🔲 57 · Insert Interval
🔲 56 · Merge Intervals
🔲 435 · Non-Overlapping Intervals
🔲 253 · Meeting Rooms II (Premium)
🔲 48 · Rotate Image
🔲 54 · Spiral Matrix
🔲 73 · Set Matrix Zeroes
🔲 50 · Pow(x, n)
🔲 43 · Multiply Strings
🔲 2013 · Detect Squares
🔲 371 · Sum of Two Integers
🔲 7 · Reverse Integer
🔲 42 · Trapping Rain Water
🔲 76 · Minimum Window Substring
🔲 239 · Sliding Window Maximum
🔲 84 · Largest Rectangle in Histogram
🔲 4 · Median of Two Sorted Arrays
🔲 23 · Merge K Sorted Lists
🔲 25 · Reverse Nodes in K-Group
🔲 124 · Binary Tree Maximum Path Sum
🔲 297 · Serialize and Deserialize Binary Tree
🔲 212 · Word Search II
🔲 295 · Find Median from Data Stream
🔲 51 · N-Queens
🔲 332 · Reconstruct Itinerary
🔲 778 · Swim in Rising Water
🔲 269 · Alien Dictionary (Premium)
🔲 329 · Longest Increasing Path in a Matrix
🔲 115 · Distinct Subsequences
🔲 312 · Burst Balloons
🔲 10 · Regular Expression Matching
🔲 1851 · Minimum Interval to Include Each Query