Interactive Code Practice
Master data structures and algorithms with our in-browser IDE. Get instant space/time complexity analysis.
How It Works
1. Select a Challenge
Browse our curated list of problems ranging from 'Two Sum' to complex 'Graph Traversal'. Filter by difficulty or data structure.
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List of coding problems with difficulty badges
2. Code in the Browser
No setup required. Write your solution in our full-featured editor supporting syntax highlighting and auto-completion.
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Code editor view with splitscreen problem description
3. Run & Test
Execute your code against multiple test cases to verify correctness. See runtime errors or output logs instantly.
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Terminal output showing 'Passed 3/3 Test Cases'
4. AI Mentorship
Stuck on a bug? Don't look up the answer. Ask our AI mentor for a hint, time complexity analysis, or a code refactor suggestion.
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Chat window with AI explaining a logic error
Why Use This Tool?
Enhance your preparation with features designed to give you the competitive edge.
See It In Action
User: "My solution is timing out on large inputs."
AI Mentor: "I see you are using a nested loop, which gives this a time complexity of O(n^2). Since the array is sorted, have you considered using a Two Pointer approach to bring this down to O(n)?"
Frequently Asked Questions
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