LeetCode Problems
Practice with the most common coding interview problems. Interview Coder helps you solve these in real-time.
Easy
150+
Problems covered
Medium
200+
Problems covered
Hard
100+
Problems covered
Popular Problem Categories
Arrays & Strings
- • Two Sum
- • Best Time to Buy and Sell Stock
- • Contains Duplicate
- • Valid Anagram
- • Group Anagrams
Linked Lists
- • Reverse Linked List
- • Merge Two Sorted Lists
- • Linked List Cycle
- • Remove Nth Node From End
- • Reorder List
Trees & Graphs
- • Maximum Depth of Binary Tree
- • Invert Binary Tree
- • Binary Tree Level Order Traversal
- • Validate Binary Search Tree
- • Number of Islands
Dynamic Programming
- • Climbing Stairs
- • House Robber
- • Coin Change
- • Longest Increasing Subsequence
- • Word Break
Sorting & Searching
- • Binary Search
- • Search in Rotated Sorted Array
- • Find Minimum in Rotated Sorted Array
- • Kth Largest Element
- • Merge Intervals
Backtracking
- • Subsets
- • Permutations
- • Combination Sum
- • Word Search
- • N-Queens
How Interview Coder Helps
- ✓Real-time Hints: Get contextual hints when you're stuck
- ✓Code Suggestions: Receive intelligent code completions
- ✓Approach Guidance: Learn optimal problem-solving strategies
- ✓Time Complexity Analysis: Understand the efficiency of your solution
- ✓Edge Case Detection: Identify cases you might have missed
Company-Specific Problem Lists
🔵 FAANG Companies
Facebook, Amazon, Apple, Netflix, Google
💼 Microsoft
Top problems asked at Microsoft
🚀 Startups
Stripe, Airbnb, Uber, Lyft
🏦 Finance
Goldman Sachs, JPMorgan, Bloomberg
Technical Interview Roadmap
Cracking the coding interview requires more than just knowing syntax. It's about pattern recognition and understanding underlying data structures. Our AI assistant helps you move through these stages:
1. Brute Force to Optimal
Don't jump to the most efficient solution immediately. AI helps you walk through the naive approach first, then refactor to O(n) or O(log n).
2. Communication is Key
Use our real-time suggestions to articulate your thought process. Interviewers value how you think over just the final code.
Frequently Asked Questions
How does the AI help with LeetCode?
Our assistant observes your screen and provides contextual hints, identifying edge cases and suggesting optimal algorithms without writing the code for you.
Is this tool undetectable on interview platforms?
Yes, we use advanced screen-recording proof technology. The overlay is invisible to common recording tools like Zoom, Discord, and browser shares.