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Description

Introducing an Online Training System designed for coding interviews, emphasizing algorithm development without the hassle of input/output parsing. With industrial-grade linting tools, you can create elegantly structured code while progressing through training in a step-by-step manner, making coding an enjoyable experience. For those seeking additional practice, there's a filtering option by difficulty level, algorithm type, and data structure, leading you to a wealth of interview questions. LintCode features an extensive collection of interview problems tailored for companies like Google, Facebook, LinkedIn, Amazon, and Microsoft, available in both Chinese and English. Tackle challenges that range from implementing an API to access user data and creating a shopping cart program, to handling exceptions, manipulating string elements, and calculating pairs of numbers that sum to a specified value. You can also delve into tasks such as printing SMS verification codes, importing modules with aliases, searching for a lecturer number, interleaving zero, even, and odd numbers, and implementing a timer decorator, among many others. This comprehensive approach not only sharpens your coding skills but also prepares you thoroughly for your upcoming interviews.

Description

Anyone can get an AI agent to turn tests green on a toy problem. kodwai measures the part that is harder to fake: how well you direct it. Developers pick a real engineering challenge (a CRDT text buffer, an event-sourced ledger, a zero-downtime migration), pull it down with npx @kodwai/cli@latest challenge <slug>, and solve it locally with Claude Code, Cursor or Codex. No browser sandbox. When they run npx @kodwai/cli@latest submit, kodwai reads the session (prompts, commits, test runs) and returns a 0 to 100 score across three axes: Direction (how you steer, verify and decompose), Outcome (what shipped, replayed and stress-tested) and Lift (how far you beat a solo AI). Each signal cites its evidence, and the score comes with a confidence interval instead of false precision. Developers get 3 free scored submissions, then connect their own Anthropic key for unlimited runs. Teams can use the hiring track to run private real-world interviews.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

Screenshots View All

Integrations

Claude No 
Claude Code No 
Codex CLI No 
Cursor No 
Git No 
Node.js No 
OpenAI Codex No 

Integrations

Claude Yes 
Claude Code Yes 
Codex CLI Yes 
Cursor Yes 
Git Yes 
Node.js Yes 
OpenAI Codex Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

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 Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

LintCode

Country

China

Website

www.lintcode.com/en/

Vendor Details

Company Name

kodwai

Country

Istanbul, Turkey

Website

www.kodwai.com

Product Features

Product Features

Coding Challenge

Kodwai is an innovative platform designed for hands-on coding challenges that emphasize agency in coding. The challenges presented are practical, bite-sized tasks—ranging from creating a bookshelf REST API to implementing a simplified version of the Raft consensus algorithm—and each task incorporates subtle pitfalls that a simple prompt might overlook. Participants tackle these challenges locally using their own AI coding agents, and the scoring system evaluates not only the success of the tests but also how effectively the user guided their agent. Scores are based on three criteria: Direction, Outcome, and Lift, with a scale from 0 to 100 and detailed evidence for each metric. The platform features a public leaderboard, a dynamic Direction rating that updates with each scored attempt, and weekly competitions to foster a sense of community.

Alternatives

Alternatives

No Alternatives