Citadel vs JPMorgan Interview Questions
Citadel lists 101 LeetCode interview questions while JPMorgan lists 78. They share 14 problems — 14% of Citadel's bank and 18% of JPMorgan's. Focus on the overlap first, then drill into 87 Citadel-only and 64 JPMorgan-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 14 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and JPMorgan.
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 JPMorgan-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
14 Shared Questions
High-priority problems to practice for both Citadel and JPMorgan.
| Problem | Difficulty |
|---|---|
| Sliding Window Maximum | Hard |
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Find Median from Data Stream | Hard |
| Group Anagrams | Medium |
| Permutations | Medium |
| Trapping Rain Water | Hard |
| Best Time to Buy and Sell Stock II | Medium |
| Fizz Buzz | Easy |
| Climbing Stairs | Easy |
| Letter Combinations of a Phone Number | Medium |
| Container With Most Water | Medium |
| Subarray Sums Divisible by K | Medium |
Unique to Citadel (87)
Problems in Citadel's list that do not appear at JPMorgan.
Unique to JPMorgan (64)
Problems in JPMorgan's list that do not appear at Citadel.
Frequently Asked Questions
How many LeetCode questions do Citadel and JPMorgan share?
Citadel and JPMorgan share 14 LeetCode interview questions. 87 problems appear only in Citadel's list and 64 appear only in JPMorgan's list.
What topics overlap most between Citadel and JPMorgan?
The most common shared topics between Citadel and JPMorgan are Array (9 shared questions), Hash Table (4 shared questions), Dynamic Programming (4 shared questions), Sorting (3 shared questions), Two Pointers (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or JPMorgan?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. JPMorgan has 25 Easy, 45 Medium, and 8 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and JPMorgan?
Start with the 14 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 JPMorgan-specific questions to round out your prep.