Now with AI-powered mock interviews

Crack the code to your dream job

Master data structures, algorithms, system design, and behavioral interviews with interactive problems, real-time feedback, and AI-driven coaching.

two-sum.py
def two_sum(nums: list, target: int) -> list:
"""Find two numbers that add up to target."""
seen = {}
for i, num in enumerate(nums):
diff = target - num
if diff in seen:
return [seen[diff], i]
seen[num] = i
All test cases passed
Runtime: 4msBeats 95%
2,500+
Problems
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Everything you need to ace the interview

A comprehensive platform built by engineers who've been through the process at top companies.

Interactive Code Editor

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AI Code Review

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Mock Interviews

Practice with AI interviewers that simulate real FAANG interview experiences with follow-up questions.

System Design

Interactive whiteboard for system design interviews with pre-built components and real-world scenarios.

Progress Tracking

Detailed analytics on your strengths and weaknesses with personalized study plans and streak tracking.

Community & Contests

Weekly contests, discussion forums, and peer code reviews to learn from the community.

Master every topic

Structured learning paths covering all major interview topics with difficulty progression.

Arrays & Strings

340 problems

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280 problems

Intermediate

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220 problems

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85 problems

Senior+

Linked Lists

120 problems

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Binary Search

95 problems

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140 problems

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60 problems

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How it works

Three simple steps to interview mastery.

01

Assess Your Level

Take a diagnostic assessment that identifies your strengths and knowledge gaps across all interview topics.

02

Follow Your Path

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03

Simulate & Succeed

Practice with timed mock interviews, get AI feedback, and build the confidence to crush your real interview.

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SWE @ Google

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SWE @ Meta

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