Citadel vs Wix Interview Questions
Citadel lists 101 LeetCode interview questions while Wix lists 55. They share 15 problems — 15% of Citadel's bank and 27% of Wix's. Focus on the overlap first, then drill into 86 Citadel-only and 40 Wix-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 15 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Wix.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Minimum Knight Moves, Delete and Earn and Wix-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
15 Shared Questions
High-priority problems to practice for both Citadel and Wix.
| Problem | Difficulty |
|---|---|
| Binary Tree Maximum Path Sum | Hard |
| Merge Intervals | Medium |
| Longest String Chain | Medium |
| Number of Islands | Medium |
| Validate Binary Search Tree | Medium |
| Search Suggestions System | Medium |
| Trapping Rain Water | Hard |
| Median of Two Sorted Arrays | Hard |
| Alien Dictionary | Hard |
| 3Sum | Medium |
| Word Search | Medium |
| Container With Most Water | Medium |
| Pow(x, n) | Medium |
| Rotting Oranges | Medium |
| Integer to Roman | Medium |
Unique to Citadel (86)
Problems in Citadel's list that do not appear at Wix.
Unique to Wix (40)
Problems in Wix's list that do not appear at Citadel.
| Problem | Difficulty |
|---|---|
| Add Two Numbers | Medium |
| Longest Palindromic Substring | Medium |
| Clone Graph | Medium |
| Is Subsequence | Easy |
| Copy List with Random Pointer | Medium |
| Merge Two Sorted Lists | Easy |
| Move Zeroes | Easy |
| Diameter of Binary Tree | Easy |
| Minimum Distance Between BST Nodes | Easy |
| Design HashSet | Easy |
| Maximum Subarray | Medium |
| Employees Earning More Than Their Managers | Easy |
Frequently Asked Questions
How many LeetCode questions do Citadel and Wix share?
Citadel and Wix share 15 LeetCode interview questions. 86 problems appear only in Citadel's list and 40 appear only in Wix's list.
What topics overlap most between Citadel and Wix?
The most common shared topics between Citadel and Wix are Array (11 shared questions), Depth-First Search (5 shared questions), String (5 shared questions), Sorting (4 shared questions), Two Pointers (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Wix?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Wix has 16 Easy, 31 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 Wix?
Start with the 15 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 Wix-specific questions to round out your prep.