ByteDance vs Epam Systems Interview Questions
ByteDance lists 64 LeetCode interview questions while Epam Systems lists 46. They share 15 problems — 23% of ByteDance's bank and 33% of Epam Systems's. Focus on the overlap first, then drill into 49 ByteDance-only and 31 Epam Systems-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 15 overlapping problems first. These are the highest-yield questions for candidates interviewing at both ByteDance and Epam Systems.
Step 2 — Company-specific depth: Add ByteDance-specific problems like Remove Duplicate Letters, Smallest Subsequence of Distinct Characters, First Day Where You Have Been in All the Rooms and Epam Systems-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: ByteDance skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
15 Shared Questions
High-priority problems to practice for both ByteDance and Epam Systems.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Merge Intervals | Medium |
| House Robber | Medium |
| Top K Frequent Elements | Medium |
| Two Sum | Easy |
| Trapping Rain Water | Hard |
| Add Two Numbers | Medium |
| Maximum Subarray | Medium |
| Multiply Strings | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Kth Largest Element in an Array | Medium |
| Longest Palindromic Substring | Medium |
| Valid Parentheses | Easy |
| Unique Paths | Medium |
Unique to ByteDance (49)
Problems in ByteDance's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Remove Duplicate Letters | Medium |
| Smallest Subsequence of Distinct Characters | Medium |
| First Day Where You Have Been in All the Rooms | Medium |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Combination Sum | Medium |
| Basic Calculator II | Medium |
| Shortest Bridge | Medium |
| Maximal Square | Medium |
| Regular Expression Matching | Hard |
| Design Memory Allocator | Medium |
| Word Ladder | Hard |
Unique to Epam Systems (31)
Problems in Epam Systems's list that do not appear at ByteDance.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Move Zeroes | Easy |
| Longest Common Prefix | Easy |
| Merge Sorted Array | Easy |
| Valid Anagram | Easy |
| Group Anagrams | Medium |
| Rotate Array | Medium |
| Reverse String | Easy |
| Partition Equal Subset Sum | Medium |
| Longest Consecutive Sequence | Medium |
| String Compression | Medium |
| Reverse Vowels of a String | Easy |
Frequently Asked Questions
How many LeetCode questions do ByteDance and Epam Systems share?
ByteDance and Epam Systems share 15 LeetCode interview questions. 49 problems appear only in ByteDance's list and 31 appear only in Epam Systems's list.
What topics overlap most between ByteDance and Epam Systems?
The most common shared topics between ByteDance and Epam Systems are Array (8 shared questions), Dynamic Programming (6 shared questions), Hash Table (4 shared questions), String (4 shared questions), Sorting (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: ByteDance or Epam Systems?
ByteDance has 4 Easy, 51 Medium, and 9 Hard questions. Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. ByteDance has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both ByteDance and Epam Systems?
Start with the 15 shared problems since they cover what both companies ask most often. Then add 20 ByteDance-specific and 20 Epam Systems-specific questions to round out your prep.