Epam Systems vs TikTok Interview Questions
Epam Systems lists 46 LeetCode interview questions while TikTok lists 351. They share 32 problems — 70% of Epam Systems's bank and 9% of TikTok's. Focus on the overlap first, then drill into 14 Epam Systems-only and 319 TikTok-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 32 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Epam Systems and TikTok.
Step 2 — Company-specific depth: Add Epam Systems-specific problems like Minimum Operations to Make a Uni-Value Grid, Merge Sorted Array, Valid Anagram and TikTok-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: TikTok skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
32 Shared Questions
High-priority problems to practice for both Epam Systems and TikTok.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Move Zeroes | Easy |
| Longest Common Prefix | Easy |
| Longest Palindromic Substring | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| Rotate Array | Medium |
| House Robber | Medium |
| Partition Equal Subset Sum | Medium |
| Longest Consecutive Sequence | Medium |
| String Compression | Medium |
| Trapping Rain Water | Hard |
| 3Sum | Medium |
| Merge Intervals | Medium |
| Generate Parentheses | Medium |
| LRU Cache | Medium |
| Add Two Numbers | Medium |
| Pow(x, n) | Medium |
| Two Sum II - Input Array Is Sorted | Medium |
| Roman to Integer | Easy |
| Maximum Subarray | Medium |
| Multiply Strings | Medium |
| Reverse Words in a String | Medium |
| Unique Paths | Medium |
| Edit Distance | Medium |
| Reverse Linked List | Easy |
| Top K Frequent Elements | Medium |
| Kth Largest Element in an Array | Medium |
Showing top 30 of 32 shared problems.
Unique to Epam Systems (14)
Problems in Epam Systems's list that do not appear at TikTok.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Merge Sorted Array | Easy |
| Valid Anagram | Easy |
| Reverse String | Easy |
| Reverse Vowels of a String | Easy |
| First Unique Character in a String | Easy |
| Palindrome Number | Easy |
| Maximum Difference Between Node and Ancestor | Medium |
| Reverse Integer | Medium |
| Duplicate Emails | Easy |
| Count Salary Categories | Medium |
| First Missing Positive | Hard |
Unique to TikTok (319)
Problems in TikTok's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| Longest Increasing Subsequence | Medium |
| Number of Distinct Islands | Medium |
| Meeting Rooms II | Medium |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Subarray With Elements Greater Than Varying Threshold | Hard |
| Text Justification | Hard |
| Decode String | Medium |
| Word Search | Medium |
| N-Queens | Hard |
| Minimum Window Substring | Hard |
Frequently Asked Questions
How many LeetCode questions do Epam Systems and TikTok share?
Epam Systems and TikTok share 32 LeetCode interview questions. 14 problems appear only in Epam Systems's list and 319 appear only in TikTok's list.
What topics overlap most between Epam Systems and TikTok?
The most common shared topics between Epam Systems and TikTok are Array (16 shared questions), String (11 shared questions), Dynamic Programming (9 shared questions), Two Pointers (8 shared questions), Hash Table (7 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Epam Systems or TikTok?
Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. TikTok has 34 Easy, 245 Medium, and 72 Hard questions. TikTok has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Epam Systems and TikTok?
Start with the 32 shared problems since they cover what both companies ask most often. Then add 14 Epam Systems-specific and 20 TikTok-specific questions to round out your prep.