Citadel vs Zepto Interview Questions
Citadel lists 101 LeetCode interview questions while Zepto lists 24. They share 5 problems — 5% of Citadel's bank and 21% of Zepto's. Focus on the overlap first, then drill into 96 Citadel-only and 19 Zepto-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 5 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Zepto.
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 Zepto-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
5 Shared Questions
High-priority problems to practice for both Citadel and Zepto.
| Problem | Difficulty |
|---|---|
| Sliding Window Maximum | Hard |
| Merge Intervals | Medium |
| Number of Islands | Medium |
| Rotting Oranges | Medium |
| Koko Eating Bananas | Medium |
Unique to Citadel (96)
Problems in Citadel's list that do not appear at Zepto.
Unique to Zepto (19)
Problems in Zepto's list that do not appear at Citadel.
| Problem | Difficulty |
|---|---|
| Longest Univalue Path | Medium |
| Longest Consecutive Sequence | Medium |
| Minimum Cost For Tickets | Medium |
| Path Sum III | Medium |
| Next Permutation | Medium |
| Make Array Empty | Hard |
| Find Peak Element | Medium |
| Maximum Width Ramp | Medium |
| Find the Distance Value Between Two Arrays | Easy |
| Longest Repeating Character Replacement | Medium |
| Count Sub Islands | Medium |
| Search in Rotated Sorted Array | Medium |
Frequently Asked Questions
How many LeetCode questions do Citadel and Zepto share?
Citadel and Zepto share 5 LeetCode interview questions. 96 problems appear only in Citadel's list and 19 appear only in Zepto's list.
What topics overlap most between Citadel and Zepto?
The most common shared topics between Citadel and Zepto are Array (5 shared questions), Breadth-First Search (2 shared questions), Matrix (2 shared questions), Queue (1 shared questions), Sliding Window (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Zepto?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Zepto has 1 Easy, 21 Medium, and 2 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Zepto?
Start with the 5 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 19 Zepto-specific questions to round out your prep.