Citadel vs Uber Interview Questions
Citadel lists 101 LeetCode interview questions while Uber lists 362. They share 51 problems — 50% of Citadel's bank and 14% of Uber's. Focus on the overlap first, then drill into 50 Citadel-only and 311 Uber-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 51 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Uber.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Delete and Earn, Palindromic Substrings and Uber-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Citadel skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
51 Shared Questions
High-priority problems to practice for both Citadel and Uber.
Showing top 30 of 51 shared problems.
Unique to Citadel (50)
Problems in Citadel's list that do not appear at Uber.
Unique to Uber (311)
Problems in Uber's list that do not appear at Citadel.
Frequently Asked Questions
How many LeetCode questions do Citadel and Uber share?
Citadel and Uber share 51 LeetCode interview questions. 50 problems appear only in Citadel's list and 311 appear only in Uber's list.
What topics overlap most between Citadel and Uber?
The most common shared topics between Citadel and Uber are Array (16 shared questions), String (11 shared questions), Dynamic Programming (7 shared questions), Depth-First Search (7 shared questions), Hash Table (7 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Uber?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Uber has 45 Easy, 215 Medium, and 102 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Uber?
Start with the 51 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 Uber-specific questions to round out your prep.