🎯 Live Interview Practice

Practice real interview problems with an AI-powered interviewer that runs entirely in your browser. Select a problem below to start coding!

Graphs 1 problems Arrays 2 problems Logical and Maintainable 1 problems Heaps 1 problems Linked Lists 1 problems Strings 2 problems Design 1 problems Math 1 problems Trees 2 problems Stacks 1 problems Dynamic Programming 1 problems

Graphs

1 total

Alien Dictionary

Hard

Practice graph construction and topological sort from ordered words

Arrays

2 total

Best Time to Buy and Sell Stock

Easy

Practice the classic stock trading problem with AI interviewer feedback

Two Sum

Easy

Practice the classic Two Sum problem with AI interviewer feedback

Logical and Maintainable

1 total

Directory Search Library

Medium

Design a composable matcher-based search over a directory tree

Heaps

1 total

Find Median from Data Stream

Hard

Practice online median maintenance with two heaps

Linked Lists

1 total

Insert GCD in Linked List

Medium

Practice linked list manipulation and math

Strings

2 total

Longest Palindromic Substring

Medium

Practice finding the longest palindrome with AI interviewer feedback

Longest Substring Without Repeating Characters

Medium

Practice sliding-window reasoning for substring constraints

Design

1 total

LRU Cache

Medium

Practice constant-time cache design with recency eviction

Math

1 total

Min Partitions of Deci-Binary

Medium

Solve a string/math optimization problem

Trees

2 total

Range Sum of BST

Easy

Practice binary tree traversal and recursion

Serialize and Deserialize Binary Tree

Hard

Practice tree encoding/decoding with preorder and null markers

Stacks

1 total

Reverse Polish Notation

Medium

Practice evaluating RPN expressions with AI interviewer feedback

Dynamic Programming

1 total

Word Break II

Hard

Practice memoized DFS to build all valid sentence decompositions