Deloitte vs Infosys Interview Questions
Deloitte lists 43 LeetCode interview questions while Infosys lists 105. They share 25 problems — 58% of Deloitte's bank and 24% of Infosys's. Focus on the overlap first, then drill into 18 Deloitte-only and 80 Infosys-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 Deloitte and Infosys.
Step 2 — Company-specific depth: Add Deloitte-specific problems like Merge k Sorted Lists, Change Null Values in a Table to the Previous Value, Add Binary and Infosys-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Infosys 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 Deloitte and Infosys.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Second Highest Salary | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Longest Palindromic Substring | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Common Prefix | Easy |
| Container With Most Water | Medium |
| Palindrome Number | Easy |
| Climbing Stairs | Easy |
| Valid Palindrome | Easy |
| Merge Intervals | Medium |
| 3Sum | Medium |
| Maximum Subarray | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Group Anagrams | Medium |
| Edit Distance | Medium |
| Coin Change | Medium |
| Kth Largest Element in an Array | Medium |
| Roman to Integer | Easy |
| Longest Consecutive Sequence | Medium |
| Rotate Array | Medium |
| Next Permutation | Medium |
| Valid Anagram | Easy |
| Subarray Sum Equals K | Medium |
Unique to Deloitte (18)
Problems in Deloitte's list that do not appear at Infosys.
| Problem | Difficulty |
|---|---|
| Merge k Sorted Lists | Hard |
| Change Null Values in a Table to the Previous Value | Medium |
| Add Binary | Easy |
| Managers with at Least 5 Direct Reports | Medium |
| Minimum Time to Repair Cars | Medium |
| First Unique Character in a String | Easy |
| Nth Highest Salary | Medium |
| Remove K Digits | Medium |
| Rising Temperature | Easy |
| Reverse Pairs | Hard |
| Remove K-Balanced Substrings | Medium |
| Max Consecutive Ones | Easy |
Unique to Infosys (80)
Problems in Infosys's list that do not appear at Deloitte.
Frequently Asked Questions
How many LeetCode questions do Deloitte and Infosys share?
Deloitte and Infosys share 25 LeetCode interview questions. 18 problems appear only in Deloitte's list and 80 appear only in Infosys's list.
What topics overlap most between Deloitte and Infosys?
The most common shared topics between Deloitte and Infosys are Array (15 shared questions), String (9 shared questions), Hash Table (7 shared questions), Two Pointers (7 shared questions), Dynamic Programming (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Deloitte or Infosys?
Deloitte has 17 Easy, 23 Medium, and 3 Hard questions. Infosys has 32 Easy, 57 Medium, and 16 Hard questions. Infosys has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Deloitte and Infosys?
Start with the 25 shared problems since they cover what both companies ask most often. Then add 18 Deloitte-specific and 20 Infosys-specific questions to round out your prep.