ServiceNow vs Snapchat Interview Questions
ServiceNow lists 71 LeetCode interview questions while Snapchat lists 99. They share 17 problems — 24% of ServiceNow's bank and 17% of Snapchat's. Focus on the overlap first, then drill into 54 ServiceNow-only and 82 Snapchat-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 17 overlapping problems first. These are the highest-yield questions for candidates interviewing at both ServiceNow and Snapchat.
Step 2 — Company-specific depth: Add ServiceNow-specific problems like Number of Distinct Roll Sequences, Lexicographically Smallest String After Operations With Constraint, Find Minimum Diameter After Merging Two Trees and Snapchat-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Snapchat skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
17 Shared Questions
High-priority problems to practice for both ServiceNow and Snapchat.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Number of Islands | Medium |
| String Compression | Medium |
| Group Anagrams | Medium |
| Best Time to Buy and Sell Stock | Easy |
| LFU Cache | Hard |
| Median of Two Sorted Arrays | Hard |
| Merge Intervals | Medium |
| Reverse Linked List | Easy |
| Amount of Time for Binary Tree to Be Infected | Medium |
| Number of Distinct Islands | Medium |
| Top K Frequent Elements | Medium |
| Reverse Words in a String | Medium |
| Letter Combinations of a Phone Number | Medium |
| Word Ladder | Hard |
| Combination Sum | Medium |
Unique to ServiceNow (54)
Problems in ServiceNow's list that do not appear at Snapchat.
Unique to Snapchat (82)
Problems in Snapchat's list that do not appear at ServiceNow.
| Problem | Difficulty |
|---|---|
| Meeting Rooms II | Medium |
| Valid Sudoku | Medium |
| Sudoku Solver | Hard |
| Combination Sum II | Medium |
| Wildcard Matching | Hard |
| Minimum Window Substring | Hard |
| Unique Binary Search Trees | Medium |
| Word Break II | Hard |
| Min Stack | Medium |
| One Edit Distance | Medium |
| Basic Calculator II | Medium |
| Alien Dictionary | Hard |
Frequently Asked Questions
How many LeetCode questions do ServiceNow and Snapchat share?
ServiceNow and Snapchat share 17 LeetCode interview questions. 54 problems appear only in ServiceNow's list and 82 appear only in Snapchat's list.
What topics overlap most between ServiceNow and Snapchat?
The most common shared topics between ServiceNow and Snapchat are Hash Table (9 shared questions), Array (8 shared questions), String (6 shared questions), Breadth-First Search (4 shared questions), Sorting (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: ServiceNow or Snapchat?
ServiceNow has 7 Easy, 51 Medium, and 13 Hard questions. Snapchat has 6 Easy, 62 Medium, and 31 Hard questions. Snapchat has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both ServiceNow and Snapchat?
Start with the 17 shared problems since they cover what both companies ask most often. Then add 20 ServiceNow-specific and 20 Snapchat-specific questions to round out your prep.