Coding Interview AI
Ace your coding interviews with our AI-powered real-time algorithm coach. Get instant code suggestions, optimization tips, and expert guidance for technical interviews at top companies.
Key Algorithms Our AI Helps You Master
See Our Coding Interview AI in Action
Approach: Use a sliding window technique with a hash map to track character positions.
Time Complexity: O(n) where n is the length of the string
Space Complexity: O(min(m, n)) where m is the size of the character set
Implementation:
function lengthOfLongestSubstring(s) { const charMap = new Map(); let maxLength = 0; let windowStart = 0; for (let windowEnd = 0; windowEnd < s.length; windowEnd++) { const rightChar = s[windowEnd]; // If character is already in current window, update window start if (charMap.has(rightChar) && charMap.get(rightChar) >= windowStart) { windowStart = charMap.get(rightChar) + 1; } // Update character position charMap.set(rightChar, windowEnd); // Update max length maxLength = Math.max(maxLength, windowEnd - windowStart + 1); } return maxLength; }
Key Points to Explain:
- We use a Map to store the most recent position of each character
- The sliding window (windowStart to windowEnd) represents our current substring
- When we find a duplicate, we move the window start to just after the previous occurrence
- We continuously update the maximum length as we go
💻 Real-Time Coding Assistance
Our AI provides instant algorithm suggestions, code snippets, and optimization tips during live coding interviews, helping you tackle complex problems efficiently and demonstrate your technical expertise.
🧠 Algorithm Mastery
Access a comprehensive library of algorithms and data structures with our AI, complete with time/space complexity analysis and implementation strategies for common interview problems across all programming languages.
🔍 Code Review Guidance
Get intelligent suggestions for improving your code quality, identifying edge cases, and optimizing performance during technical interviews, ensuring your solutions are robust and efficient.
⚡ Language-Specific Support
Receive specialized help for multiple programming languages including Python, JavaScript, Java, C++, and more, with idiomatic code suggestions tailored to your preferred language and interview requirements.
🎯 Role-Specific Preparation
Get customized guidance for specific roles like frontend developer, backend engineer, full-stack developer, or mobile engineer, with focus on the coding challenges most relevant to your target position.
📝 Interview Strategy Coaching
Receive strategic guidance on how to approach technical problems, communicate your thought process effectively, and demonstrate your problem-solving skills to impress interviewers at top companies.
Top Coding Interview Resources
Ready to Ace Your Coding Interviews?
Join thousands of software engineers who've used our coding interview AI to solve complex problems, optimize their solutions, and land positions at top tech companies.
Get Your Coding Interview AIFree trial available • Works with all major programming languages • Start coding with confidence
Related Algorithm Guides
Explore more algorithm interview guides powered by AI coaching