Skip to content

Interview Solver

FeaturesPricingHelp
Sign In
FeaturesPricingHelpSign In
← Back to Interview Questions

Citadel LeetCode Problems

2 most frequently asked LeetCode problems in Citadel technical interviews

Difficulty breakdown: 0 Easy, 1 Medium, 1 Hard

Ace Your Citadel Interview

Don't just study these problems — get real-time AI assistance during your actual interview with Interview Solver.

Try Free
ProblemDifficultyDiffFrequencyTagsAction
Insert Delete GetRandom O(1)
100%
MediumM
100%
ArrayHash Table+3
Solve→
Rank Transform of a Matrix
90%
HardH
90%
ArrayUnion Find+4
Solve→
Interview Solver
  • Home
  • Pricing
  • Sign in
  • Contact
  • Blog
  • Companion
  • Help Center
  • Use Cases
  • Software Engineer
  • Product Manager
  • Misc
  • Privacy Policy
  • Terms and Conditions
  • Discord Community
  • Affiliate Program
  • Interview Questions
  • Google Interview Questions
  • Amazon Interview Questions
  • Microsoft Interview Questions
  • Meta Interview Questions
  • Apple Interview Questions
  • TikTok Interview Questions
  • View All →
© 2025 Interview Solver, Inc. All rights reserved.