Arista Networks vs Citadel Interview Questions
Arista Networks lists 39 LeetCode interview questions while Citadel lists 101. They share 7 problems — 18% of Arista Networks's bank and 7% of Citadel's. Focus on the overlap first, then drill into 32 Arista Networks-only and 94 Citadel-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 7 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Arista Networks and Citadel.
Step 2 — Company-specific depth: Add Arista Networks-specific problems like Construct String With Repeat Limit, Find the Town Judge, Reverse Nodes in k-Group and Citadel-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
7 Shared Questions
High-priority problems to practice for both Arista Networks and Citadel.
| Problem | Difficulty |
|---|---|
| Course Schedule II | Medium |
| LRU Cache | Medium |
| Simplify Path | Medium |
| Permutations | Medium |
| Palindromic Substrings | Medium |
| Word Search | Medium |
| Moving Average from Data Stream | Easy |
Unique to Arista Networks (32)
Problems in Arista Networks's list that do not appear at Citadel.
| Problem | Difficulty |
|---|---|
| Construct String With Repeat Limit | Medium |
| Find the Town Judge | Easy |
| Reverse Nodes in k-Group | Hard |
| Restore IP Addresses | Medium |
| Reorder List | Medium |
| Reverse Linked List II | Medium |
| Remove Linked List Elements | Easy |
| Contains Duplicate II | Easy |
| Inorder Successor in BST II | Medium |
| Maximum Depth of Binary Tree | Easy |
| Copy List with Random Pointer | Medium |
| Missing Number | Easy |
Unique to Citadel (94)
Problems in Citadel's list that do not appear at Arista Networks.
Frequently Asked Questions
How many LeetCode questions do Arista Networks and Citadel share?
Arista Networks and Citadel share 7 LeetCode interview questions. 32 problems appear only in Arista Networks's list and 94 appear only in Citadel's list.
What topics overlap most between Arista Networks and Citadel?
The most common shared topics between Arista Networks and Citadel are String (3 shared questions), Array (3 shared questions), Depth-First Search (2 shared questions), Design (2 shared questions), Backtracking (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Arista Networks or Citadel?
Arista Networks has 12 Easy, 26 Medium, and 1 Hard questions. Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Arista Networks and Citadel?
Start with the 7 shared problems since they cover what both companies ask most often. Then add 20 Arista Networks-specific and 20 Citadel-specific questions to round out your prep.