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About

Coding Interview Question Online Training System. Focus on algorithm. No parsing input/output anymore. Industrial standard lint helps you write the most beautiful code. Step by step training. Coding for fun. Want more practises can filter by difficulty, algorithm and data structure? Check out our interview questions. LintCode has the most interview problems covering Google, Facebook, Linkedin, Amazon, Microsoft and so on. We provide Chinese and English versions of the challenges. Solve challenges such as: Implement an API to Access User Data, Implement Decorator with Parameters, Exception Handling, Implementing a shopping cart program, Replace the elements in a string, The number of the two numbers in the list whose sum is equal to n, Print out SMS verification code, Import a module and alias it, Importing a module, Search for a lecturer number, Print Zero, Even and Odd Number Interleave, Implement timer decorator, and many more.

About

kodwai is a platform where developers solve real coding challenges on their own machine with their own AI coding agent (Claude Code, Cursor, or Codex) and get scored on how well they direct the agent, across three axes: Direction, Outcome, and Lift. Pick a ticket-sized challenge (a multi-tenant rate limiter, an idempotent ETL pipeline, a Raft-lite log), run npx @kodwai/cli@latest challenge <slug> to pull the problem, starter code and tests into a fresh git repo, solve it the way you actually work, then run npx @kodwai/cli@latest submit. The score is 0 to 100, and every signal cites evidence from your transcript, commits and test runs. Free for developers with a public profile and leaderboard. Hiring teams can run private real-world interviews and see how candidates work with AI agents: the prompts, the recovery, the verification, the result.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Companies in search of a coding interview question online training system solution to conduct technical interviews

Audience

Software developers who code with AI agents, and engineering teams hiring for AI-assisted development

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

Free
Free for developers: 3 scored submissions on kodwai's key, then connect your own Anthropic API key for unlimited submissions. The challenges, score, public profile and leaderboard are free. Hiring track for teams: contact us for pricing.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 1.0 / 5
ease 1.0 / 5
features 1.0 / 5
design 2.0 / 5
support 1.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • You don't need account to see problems/exercises. Problems are too easy to solve. You can see solutions, without the need to be logged in.

Cons

  • Courses are in Chinese only. Cannot contact support team.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

LintCode
China
www.lintcode.com/en/

Company Information

kodwai
Istanbul, Turkey
www.kodwai.com

Alternatives

Alternatives

Codeaid

Codeaid

Scopic
Codeaid

Codeaid

Scopic

Categories

Coding Challenge Supported

Categories

Coding Challenge Supported

kodwai is a coding challenge platform built for agentic coding. Challenges are realistic, ticket-sized tasks (from a bookshelf REST API to a Raft-lite log) and each one hides a few traps that a single prompt tends to miss. You solve them locally with your own AI coding agent, and the score reflects how well you directed it, not just whether the tests passed: Direction, Outcome and Lift, from 0 to 100, with evidence for every signal. There is a public leaderboard, a Direction rating that moves with every scored run, and a weekly league.

Integrations

Claude Not Supported
Claude Code Not Supported
Codex CLI Not Supported
Cursor Not Supported
Git Not Supported
Node.js Not Supported
OpenAI Codex Not Supported

Integrations

Claude Supported
Claude Code Supported
Codex CLI Supported
Cursor Supported
Git Supported
Node.js Supported
OpenAI Codex Supported
Claim LintCode and update features and information
Claim LintCode and update features and information
Claim kodwai and update features and information
Claim kodwai and update features and information