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Interactive Coding Environment

Practice with real interview problems and get instant AI-powered feedback on your solutions. Improve your coding skills with detailed analysis of correctness, performance, and code quality.

Problem

Medium

API Latency Anomaly Detection

Given a dictionary api_latencies mapping API endpoint names to their average latency in milliseconds, and an integer target_sum, find two distinct endpoints whose latencies sum up to this target.

Asked by Companies

NetflixUberStripeDatadog

Example

Input:
api_latencies = {"/api/v1/users": 120, "/api/v1/posts": 80, "/api/v1/comments": 150}
target_sum = 200
Output:
["/api/v1/users", "/api/v1/posts"]

Constraints

  • • 2 ≤ len(api_latencies) ≤ 10⁵
  • • Latencies are positive integers
  • • All endpoint names are unique
  • • Return any valid pair if multiple exist

Code Editor

Python
Lines: 18 | Characters: 568

System Design Practice

Master system design interviews with our interactive practice environment. Design scalable architectures and get AI-powered feedback on your solutions.

System Design Interview Practice

Design a Global Chat Application

Design a real-time messaging application like WhatsApp or Slack that supports billions of users with features like 1-on-1 chat, group chat, message delivery status, online presence, and media sharing.

Hard⏱️ 45-60 minutes
Real-timeWebSocketMessagingGlobal ScaleSocial

System Design Canvas

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🖥️ Desktop recommended for drag-and-drop functionality

Smart Resume Tailoring

AI analyzes job descriptions and optimizes your resume to ensure you pass ATS screening and land interviews

32% ATS⚠️ LOW

Alex Johnson

Technology Professional

Skills
ProgrammingTechnologyProblem SolvingCommunication
Experience

• Worked on various technology projects

• Collaborated with cross-functional teams

• Delivered solutions for business needs

Before: Generic Resume
92% ATS

Alex Johnson

Senior Data Engineer

Optimized Skills
Apache SparkPythonAWSETL PipelinesKafkaSQL
Enhanced Experience

• Architected scalable data pipelines processing 10TB+ daily

• Optimized ETL workflows reducing processing time by 75%

• Built real-time streaming solutions with Apache Kafka

After: AI-Optimized

Practice with Mock Interviews

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Everything You Need to Succeed

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Discussion Forum

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