Deloitte vs ServiceNow Interview Questions
Deloitte lists 43 LeetCode interview questions while ServiceNow lists 71. They share 13 problems — 30% of Deloitte's bank and 18% of ServiceNow's. Focus on the overlap first, then drill into 30 Deloitte-only and 58 ServiceNow-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 13 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Deloitte and ServiceNow.
Step 2 — Company-specific depth: Add Deloitte-specific problems like Merge k Sorted Lists, Change Null Values in a Table to the Previous Value, Second Highest Salary 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
13 Shared Questions
High-priority problems to practice for both Deloitte and ServiceNow.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Longest Palindromic Substring | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Container With Most Water | Medium |
| Merge Intervals | Medium |
| Maximum Subarray | Medium |
| Group Anagrams | Medium |
| Coin Change | Medium |
| Kth Largest Element in an Array | Medium |
| Next Permutation | Medium |
| Subarray Sum Equals K | Medium |
Unique to Deloitte (30)
Problems in Deloitte's list that do not appear at ServiceNow.
| Problem | Difficulty |
|---|---|
| Merge k Sorted Lists | Hard |
| Change Null Values in a Table to the Previous Value | Medium |
| Second Highest Salary | Medium |
| Longest Common Prefix | Easy |
| Palindrome Number | Easy |
| Climbing Stairs | Easy |
| Valid Palindrome | Easy |
| Add Binary | Easy |
| Managers with at Least 5 Direct Reports | Medium |
| Minimum Time to Repair Cars | Medium |
| First Unique Character in a String | Easy |
| 3Sum | Medium |
Unique to ServiceNow (58)
Problems in ServiceNow's list that do not appear at Deloitte.
Frequently Asked Questions
How many LeetCode questions do Deloitte and ServiceNow share?
Deloitte and ServiceNow share 13 LeetCode interview questions. 30 problems appear only in Deloitte's list and 58 appear only in ServiceNow's list.
What topics overlap most between Deloitte and ServiceNow?
The most common shared topics between Deloitte and ServiceNow are Array (10 shared questions), Hash Table (4 shared questions), String (4 shared questions), Dynamic Programming (4 shared questions), Two Pointers (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Deloitte or ServiceNow?
Deloitte has 17 Easy, 23 Medium, and 3 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 Deloitte and ServiceNow?
Start with the 13 shared problems since they cover what both companies ask most often. Then add 20 Deloitte-specific and 20 ServiceNow-specific questions to round out your prep.