Arista Networks vs IBM Interview Questions
Arista Networks lists 39 LeetCode interview questions while IBM lists 115. They share 6 problems — 15% of Arista Networks's bank and 5% of IBM's. Focus on the overlap first, then drill into 33 Arista Networks-only and 109 IBM-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Arista Networks and IBM.
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 IBM-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: IBM skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
6 Shared Questions
High-priority problems to practice for both Arista Networks and IBM.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Maximum Units on a Truck | Easy |
| Longest Palindromic Substring | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Maximum Subarray | Medium |
| Word Break | Medium |
Unique to Arista Networks (33)
Problems in Arista Networks's list that do not appear at IBM.
| 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 |
| Course Schedule II | 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 |
Unique to IBM (109)
Problems in IBM's list that do not appear at Arista Networks.
| Problem | Difficulty |
|---|---|
| Find the Smallest Divisor Given a Threshold | Medium |
| Gray Code | Medium |
| 3Sum | Medium |
| Exclusive Time of Functions | Medium |
| Integer to Roman | Medium |
| Minimum Operations to Make Columns Strictly Increasing | Easy |
| Fizz Buzz | Easy |
| Roman to Integer | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Count Ways to Group Overlapping Ranges | Medium |
| Two Sum | Easy |
| Meeting Rooms II | Medium |
Frequently Asked Questions
How many LeetCode questions do Arista Networks and IBM share?
Arista Networks and IBM share 6 LeetCode interview questions. 33 problems appear only in Arista Networks's list and 109 appear only in IBM's list.
What topics overlap most between Arista Networks and IBM?
The most common shared topics between Arista Networks and IBM are Hash Table (3 shared questions), Array (3 shared questions), String (3 shared questions), Dynamic Programming (3 shared questions), Linked List (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Arista Networks or IBM?
Arista Networks has 12 Easy, 26 Medium, and 1 Hard questions. IBM has 33 Easy, 73 Medium, and 9 Hard questions. IBM has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Arista Networks and IBM?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 Arista Networks-specific and 20 IBM-specific questions to round out your prep.