ByteDance vs ServiceNow Interview Questions
ByteDance lists 64 LeetCode interview questions while ServiceNow lists 71. They share 21 problems — 33% of ByteDance's bank and 30% of ServiceNow's. Focus on the overlap first, then drill into 43 ByteDance-only and 50 ServiceNow-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 21 overlapping problems first. These are the highest-yield questions for candidates interviewing at both ByteDance and ServiceNow.
Step 2 — Company-specific depth: Add ByteDance-specific problems like Remove Duplicate Letters, Smallest Subsequence of Distinct Characters, First Day Where You Have Been in All the Rooms and ServiceNow-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: ServiceNow skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
21 Shared Questions
High-priority problems to practice for both ByteDance and ServiceNow.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Islands | Medium |
| Combination Sum | Medium |
| Merge Intervals | Medium |
| Top K Frequent Elements | Medium |
| Two Sum | Easy |
| Word Ladder | Hard |
| Trapping Rain Water | Hard |
| Rotting Oranges | Medium |
| Longest Common Subsequence | Medium |
| Maximum Subarray | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Single Element in a Sorted Array | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Kth Largest Element in an Array | Medium |
| Subarray Sum Equals K | Medium |
| Longest Repeating Character Replacement | Medium |
| Longest Palindromic Substring | Medium |
| Find Peak Element | Medium |
| Valid Parentheses | Easy |
| Sliding Window Maximum | Hard |
Unique to ByteDance (43)
Problems in ByteDance's list that do not appear at ServiceNow.
| Problem | Difficulty |
|---|---|
| Remove Duplicate Letters | Medium |
| Smallest Subsequence of Distinct Characters | Medium |
| First Day Where You Have Been in All the Rooms | Medium |
| Course Schedule | Medium |
| Basic Calculator II | Medium |
| Shortest Bridge | Medium |
| House Robber | Medium |
| Maximal Square | Medium |
| Regular Expression Matching | Hard |
| Design Memory Allocator | Medium |
| Longest Increasing Subsequence | Medium |
| Search in Rotated Sorted Array | Medium |
Unique to ServiceNow (50)
Problems in ServiceNow's list that do not appear at ByteDance.
Frequently Asked Questions
How many LeetCode questions do ByteDance and ServiceNow share?
ByteDance and ServiceNow share 21 LeetCode interview questions. 43 problems appear only in ByteDance's list and 50 appear only in ServiceNow's list.
What topics overlap most between ByteDance and ServiceNow?
The most common shared topics between ByteDance and ServiceNow are Array (14 shared questions), Hash Table (7 shared questions), String (6 shared questions), Dynamic Programming (5 shared questions), Breadth-First Search (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: ByteDance or ServiceNow?
ByteDance has 4 Easy, 51 Medium, and 9 Hard questions. ServiceNow has 7 Easy, 51 Medium, and 13 Hard questions. ServiceNow has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both ByteDance and ServiceNow?
Start with the 21 shared problems since they cover what both companies ask most often. Then add 20 ByteDance-specific and 20 ServiceNow-specific questions to round out your prep.