Amazon vs ServiceNow Interview Questions
Amazon lists 1,968 LeetCode interview questions while ServiceNow lists 71. They share 65 problems — 3% of Amazon's bank and 92% of ServiceNow's. Focus on the overlap first, then drill into 1,903 Amazon-only and 6 ServiceNow-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 65 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Amazon and ServiceNow.
Step 2 — Company-specific depth: Add Amazon-specific problems like Add Two Numbers, Reorganize String, 3Sum and ServiceNow-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Amazon skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
65 Shared Questions
High-priority problems to practice for both Amazon and ServiceNow.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| LRU Cache | Medium |
| Trapping Rain Water | Hard |
| Number of Islands | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
| Merge Intervals | Medium |
| Container With Most Water | Medium |
| Median of Two Sorted Arrays | Hard |
| Valid Parentheses | Easy |
| Rotting Oranges | Medium |
| Subarray Sum Equals K | Medium |
| Top K Frequent Elements | Medium |
| Maximum Subarray | Medium |
| Generate Parentheses | Medium |
| Word Ladder | Hard |
| Merge Two Sorted Lists | Easy |
| Letter Combinations of a Phone Number | Medium |
| Sliding Window Maximum | Hard |
| Next Permutation | Medium |
| Coin Change | Medium |
| Kth Largest Element in an Array | Medium |
| Find Peak Element | Medium |
| First Missing Positive | Hard |
| Asteroid Collision | Medium |
| Move Zeroes | Easy |
| Jump Game II | Medium |
| Sort Colors | Medium |
Showing top 30 of 65 shared problems.
Unique to Amazon (1,903)
Problems in Amazon's list that do not appear at ServiceNow.
| Problem | Difficulty |
|---|---|
| Add Two Numbers | Medium |
| Reorganize String | Medium |
| 3Sum | Medium |
| Koko Eating Bananas | Medium |
| Course Schedule | Medium |
| Merge k Sorted Lists | Hard |
| Longest Common Prefix | Easy |
| Merge Sorted Array | Easy |
| Search in Rotated Sorted Array | Medium |
| Longest Consecutive Sequence | Medium |
| Copy List with Random Pointer | Medium |
| Lowest Common Ancestor of a Binary Tree | Medium |
Unique to ServiceNow (6)
Problems in ServiceNow's list that do not appear at Amazon.
Frequently Asked Questions
How many LeetCode questions do Amazon and ServiceNow share?
Amazon and ServiceNow share 65 LeetCode interview questions. 1903 problems appear only in Amazon's list and 6 appear only in ServiceNow's list.
What topics overlap most between Amazon and ServiceNow?
The most common shared topics between Amazon and ServiceNow are Array (22 shared questions), Hash Table (9 shared questions), Dynamic Programming (7 shared questions), String (7 shared questions), Two Pointers (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Amazon or ServiceNow?
Amazon has 527 Easy, 1074 Medium, and 367 Hard questions. ServiceNow has 7 Easy, 51 Medium, and 13 Hard questions. Amazon has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Amazon and ServiceNow?
Start with the 65 shared problems since they cover what both companies ask most often. Then add 20 Amazon-specific and 6 ServiceNow-specific questions to round out your prep.