Deloitte vs Epam Systems Interview Questions
Deloitte lists 43 LeetCode interview questions while Epam Systems lists 46. They share 19 problems — 44% of Deloitte's bank and 41% of Epam Systems's. Focus on the overlap first, then drill into 24 Deloitte-only and 27 Epam Systems-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 19 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Deloitte and Epam Systems.
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 Epam Systems-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Deloitte skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
19 Shared Questions
High-priority problems to practice for both Deloitte and Epam Systems.
| 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 |
| Longest Common Prefix | Easy |
| Palindrome Number | Easy |
| Merge Intervals | Medium |
| First Unique Character in a String | Easy |
| 3Sum | Medium |
| Maximum Subarray | Medium |
| Group Anagrams | Medium |
| Edit Distance | Medium |
| Kth Largest Element in an Array | Medium |
| Roman to Integer | Easy |
| Longest Consecutive Sequence | Medium |
| Rotate Array | Medium |
| Valid Anagram | Easy |
| Reverse Vowels of a String | Easy |
Unique to Deloitte (24)
Problems in Deloitte's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Merge k Sorted Lists | Hard |
| Change Null Values in a Table to the Previous Value | Medium |
| Second Highest Salary | Medium |
| Container With Most Water | Medium |
| Climbing Stairs | Easy |
| Valid Palindrome | Easy |
| Add Binary | Easy |
| Managers with at Least 5 Direct Reports | Medium |
| Minimum Time to Repair Cars | Medium |
| Nth Highest Salary | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Remove K Digits | Medium |
Unique to Epam Systems (27)
Problems in Epam Systems's list that do not appear at Deloitte.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Move Zeroes | Easy |
| Merge Sorted Array | Easy |
| Reverse String | Easy |
| House Robber | Medium |
| Partition Equal Subset Sum | Medium |
| String Compression | Medium |
| Trapping Rain Water | Hard |
| Generate Parentheses | Medium |
| LRU Cache | Medium |
| Add Two Numbers | Medium |
| Maximum Difference Between Node and Ancestor | Medium |
Frequently Asked Questions
How many LeetCode questions do Deloitte and Epam Systems share?
Deloitte and Epam Systems share 19 LeetCode interview questions. 24 problems appear only in Deloitte's list and 27 appear only in Epam Systems's list.
What topics overlap most between Deloitte and Epam Systems?
The most common shared topics between Deloitte and Epam Systems are Array (10 shared questions), String (10 shared questions), Hash Table (7 shared questions), Sorting (5 shared questions), Two Pointers (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Deloitte or Epam Systems?
Deloitte has 17 Easy, 23 Medium, and 3 Hard questions. Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. Deloitte has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Deloitte and Epam Systems?
Start with the 19 shared problems since they cover what both companies ask most often. Then add 20 Deloitte-specific and 20 Epam Systems-specific questions to round out your prep.