Citadel vs Lyft Interview Questions
Citadel lists 101 LeetCode interview questions while Lyft lists 26. They share 4 problems — 4% of Citadel's bank and 15% of Lyft's. Focus on the overlap first, then drill into 97 Citadel-only and 22 Lyft-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 4 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Lyft.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Binary Tree Maximum Path Sum, Minimum Knight Moves and Lyft-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
4 Shared Questions
High-priority problems to practice for both Citadel and Lyft.
| Problem | Difficulty |
|---|---|
| Implement Trie (Prefix Tree) | Medium |
| Asteroid Collision | Medium |
| Word Ladder II | Hard |
| Rotting Oranges | Medium |
Unique to Citadel (97)
Problems in Citadel's list that do not appear at Lyft.
Unique to Lyft (22)
Problems in Lyft's list that do not appear at Citadel.
Frequently Asked Questions
How many LeetCode questions do Citadel and Lyft share?
Citadel and Lyft share 4 LeetCode interview questions. 97 problems appear only in Citadel's list and 22 appear only in Lyft's list.
What topics overlap most between Citadel and Lyft?
The most common shared topics between Citadel and Lyft are Hash Table (2 shared questions), String (2 shared questions), Array (2 shared questions), Breadth-First Search (2 shared questions), Design (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Lyft?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Lyft has 0 Easy, 19 Medium, and 7 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Lyft?
Start with the 4 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 Lyft-specific questions to round out your prep.