Arista Networks vs TikTok Interview Questions
Arista Networks lists 39 LeetCode interview questions while TikTok lists 351. They share 25 problems — 64% of Arista Networks's bank and 7% of TikTok's. Focus on the overlap first, then drill into 14 Arista Networks-only and 326 TikTok-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 25 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Arista Networks and TikTok.
Step 2 — Company-specific depth: Add Arista Networks-specific problems like Construct String With Repeat Limit, Find the Town Judge, Remove Linked List Elements and TikTok-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: TikTok skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
25 Shared Questions
High-priority problems to practice for both Arista Networks and TikTok.
| Problem | Difficulty |
|---|---|
| Reverse Nodes in k-Group | Hard |
| Restore IP Addresses | Medium |
| Reorder List | Medium |
| Course Schedule II | Medium |
| Reverse Linked List II | Medium |
| Copy List with Random Pointer | Medium |
| LRU Cache | Medium |
| Search in Rotated Sorted Array | Medium |
| Simplify Path | Medium |
| Remove Duplicates from Sorted List II | Medium |
| Permutations | Medium |
| Merge In Between Linked Lists | Medium |
| Path Sum II | Medium |
| Longest Palindromic Substring | Medium |
| Word Search | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Maximum Subarray | Medium |
| Swap Nodes in Pairs | Medium |
| Word Break | Medium |
| Top K Frequent Elements | Medium |
| Edit Distance | Medium |
| Valid Palindrome | Easy |
| Decode String | Medium |
| Implement Queue using Stacks | Easy |
| Merge Two Sorted Lists | Easy |
Unique to Arista Networks (14)
Problems in Arista Networks's list that do not appear at TikTok.
| Problem | Difficulty |
|---|---|
| Construct String With Repeat Limit | Medium |
| Find the Town Judge | Easy |
| Remove Linked List Elements | Easy |
| Contains Duplicate II | Easy |
| Inorder Successor in BST II | Medium |
| Maximum Depth of Binary Tree | Easy |
| Missing Number | Easy |
| Rotated Digits | Medium |
| Maximum Units on a Truck | Easy |
| Palindromic Substrings | Medium |
| Remove All Occurrences of a Substring | Medium |
| Kth Largest Element in a Stream | Easy |
Unique to TikTok (326)
Problems in TikTok's list that do not appear at Arista Networks.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| Longest Increasing Subsequence | Medium |
| Number of Distinct Islands | Medium |
| Meeting Rooms II | Medium |
| Merge Intervals | Medium |
| Course Schedule | Medium |
| Trapping Rain Water | Hard |
| Subarray With Elements Greater Than Varying Threshold | Hard |
| Text Justification | Hard |
| N-Queens | Hard |
| Minimum Window Substring | Hard |
| Subarray Sum Equals K | Medium |
Frequently Asked Questions
How many LeetCode questions do Arista Networks and TikTok share?
Arista Networks and TikTok share 25 LeetCode interview questions. 14 problems appear only in Arista Networks's list and 326 appear only in TikTok's list.
What topics overlap most between Arista Networks and TikTok?
The most common shared topics between Arista Networks and TikTok are Linked List (9 shared questions), String (9 shared questions), Array (6 shared questions), Recursion (5 shared questions), Hash Table (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Arista Networks or TikTok?
Arista Networks has 12 Easy, 26 Medium, and 1 Hard questions. TikTok has 34 Easy, 245 Medium, and 72 Hard questions. TikTok has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Arista Networks and TikTok?
Start with the 25 shared problems since they cover what both companies ask most often. Then add 14 Arista Networks-specific and 20 TikTok-specific questions to round out your prep.