Citadel vs Goldman Sachs Interview Questions
Citadel lists 101 LeetCode interview questions while Goldman Sachs lists 261. They share 51 problems — 50% of Citadel's bank and 20% of Goldman Sachs's. Focus on the overlap first, then drill into 50 Citadel-only and 210 Goldman Sachs-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 Goldman Sachs.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Minimum Knight Moves, Delete and Earn and Goldman Sachs-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 Goldman Sachs.
| Problem | Difficulty |
|---|---|
| Binary Tree Maximum Path Sum | Hard |
| Palindromic Substrings | Medium |
| Sliding Window Maximum | Hard |
| Count Palindromic Subsequences | Hard |
| LFU Cache | Hard |
| LRU Cache | Medium |
| Evaluate Division | Medium |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Find the Duplicate Number | Medium |
| Evaluate Reverse Polish Notation | Medium |
| Number of Islands | Medium |
| Sudoku Solver | Hard |
| Find Median from Data Stream | Hard |
| Group Anagrams | Medium |
| Validate Binary Search Tree | Medium |
| Permutations | Medium |
| Merge k Sorted Lists | Hard |
| Binary Tree Zigzag Level Order Traversal | Medium |
| Trapping Rain Water | Hard |
| N-Queens | Hard |
| Best Time to Buy and Sell Stock II | Medium |
| Design Circular Queue | Medium |
| Fizz Buzz | Easy |
| Best Time to Buy and Sell Stock III | Hard |
| Implement Trie (Prefix Tree) | Medium |
| Perfect Squares | Medium |
| Climbing Stairs | Easy |
| Letter Combinations of a Phone Number | Medium |
| Median of Two Sorted Arrays | Hard |
Showing top 30 of 51 shared problems.
Unique to Citadel (50)
Problems in Citadel's list that do not appear at Goldman Sachs.
Unique to Goldman Sachs (210)
Problems in Goldman Sachs's list that do not appear at Citadel.
| Problem | Difficulty |
|---|---|
| First Unique Character in a String | Easy |
| Fraction to Recurring Decimal | Medium |
| High Five | Easy |
| Minimum Path Sum | Medium |
| Longest Substring Without Repeating Characters | Medium |
| String Compression | Medium |
| Find the Winner of the Circular Game | Medium |
| Robot Bounded In Circle | Medium |
| Decode Ways | Medium |
| Search in Rotated Sorted Array | Medium |
| Find Minimum in Rotated Sorted Array | Medium |
| Better Compression of String | Medium |
Frequently Asked Questions
How many LeetCode questions do Citadel and Goldman Sachs share?
Citadel and Goldman Sachs share 51 LeetCode interview questions. 50 problems appear only in Citadel's list and 210 appear only in Goldman Sachs's list.
What topics overlap most between Citadel and Goldman Sachs?
The most common shared topics between Citadel and Goldman Sachs are Array (16 shared questions), Dynamic Programming (9 shared questions), String (7 shared questions), Hash Table (6 shared questions), Design (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Goldman Sachs?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Goldman Sachs has 48 Easy, 165 Medium, and 48 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Goldman Sachs?
Start with the 51 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 Goldman Sachs-specific questions to round out your prep.