AI writes code.
Can you debug it?
Ace placements and FAANG interviews. Practice themed coding challenges, timed mock tests, and Debug Mode—designed for CS students and software engineers.
Prep for coding rounds at
How it works
From topic to skill in three steps.
Generate
Type any topic. AI creates a unique problem with hidden test cases in seconds.
Solve & Debug
Code the solution or enter Debug Mode to hunt down defects in AI-written code.
Get Reviewed
Instant AI feedback — complexity, hints, and optimisation tips after every submit.
Why SadhanAI
Built different.
// REAL-WORLD SKILLSETS
Companies don't hire for memorized DSA. They hire for debugging, code understanding, and modern system architectures.
Problems in Your World
Cricket, anime, finance, space. AI generates a fresh coding challenge in any theme you name — so you actually want to practice.
Create & Share Mock Tests
Build a timed mock test, share the link, compete with friends. See results side-by-side and learn from the gap.
AI Review on Every Submission
Not just pass or fail. Every submission gets structured feedback — hints, complexity analysis, and optimisation suggestions.
Problem Bundles
Curated sets. Ready to solve.
Library Practice
Practice real AI frameworks.
LangGraph
Build and debug stateful AI agent graphs. Real patterns from production LLM pipelines.
from langgraph.graph import StateGraph
graph = StateGraph(AgentState)
graph.add_node("reason", reason_step)
graph.add_edge("reason", "act")
All test cases passed
Platform
Everything you need. Nothing you don't.
Practice Daily
Generate themed coding challenges around topics you love — Cricket, Anime, Finance — or solve classic DSA problems.
Simulate Interviews
Timed mock tests that replicate real FAANG pressure. Build the mental endurance the actual interview demands.
Debug Mode
Read intentionally buggy AI-written code, locate the defects, and fix them. The skill that separates seniors from juniors.
Structured Learning Paths
Step-by-step guides to master LLM agents, modern APIs, and interview prep — in a sequence that actually sticks.
Get started free
The interview is a skill.
Start building it today.
No subscription needed to start. Generate your first problem now.