Epam Systems vs Yandex Interview Questions
Epam Systems lists 46 LeetCode interview questions while Yandex lists 128. They share 24 problems — 52% of Epam Systems's bank and 19% of Yandex's. Focus on the overlap first, then drill into 22 Epam Systems-only and 104 Yandex-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 24 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Epam Systems and Yandex.
Step 2 — Company-specific depth: Add Epam Systems-specific problems like Minimum Operations to Make a Uni-Value Grid, Longest Common Prefix, Rotate Array and Yandex-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Yandex skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
24 Shared Questions
High-priority problems to practice for both Epam Systems and Yandex.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Move Zeroes | Easy |
| Longest Palindromic Substring | Medium |
| Merge Sorted Array | Easy |
| Valid Anagram | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| String Compression | Medium |
| Trapping Rain Water | Hard |
| First Unique Character in a String | Easy |
| Merge Intervals | Medium |
| Generate Parentheses | Medium |
| LRU Cache | Medium |
| Add Two Numbers | Medium |
| Palindrome Number | Easy |
| Reverse Integer | Medium |
| Two Sum II - Input Array Is Sorted | Medium |
| Maximum Subarray | Medium |
| Reverse Linked List | Easy |
| Top K Frequent Elements | Medium |
| Median of Two Sorted Arrays | Hard |
| Merge Two Sorted Lists | Easy |
Unique to Epam Systems (22)
Problems in Epam Systems's list that do not appear at Yandex.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Longest Common Prefix | Easy |
| Rotate Array | Medium |
| Reverse String | Easy |
| House Robber | Medium |
| Partition Equal Subset Sum | Medium |
| Longest Consecutive Sequence | Medium |
| Reverse Vowels of a String | Easy |
| 3Sum | Medium |
| Maximum Difference Between Node and Ancestor | Medium |
| Pow(x, n) | Medium |
| Duplicate Emails | Easy |
Unique to Yandex (104)
Problems in Yandex's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Longest Subarray of 1's After Deleting One Element | Medium |
| Summary Ranges | Easy |
| Maximize Distance to Closest Person | Medium |
| Find K Closest Elements | Medium |
| Subarray Sum Equals K | Medium |
| Valid Palindrome II | Easy |
| One Edit Distance | Medium |
| Permutation in String | Medium |
| Isomorphic Strings | Easy |
| Line Reflection | Medium |
| Longest Strictly Increasing or Strictly Decreasing Subarray | Easy |
| Valid Palindrome | Easy |
Frequently Asked Questions
How many LeetCode questions do Epam Systems and Yandex share?
Epam Systems and Yandex share 24 LeetCode interview questions. 22 problems appear only in Epam Systems's list and 104 appear only in Yandex's list.
What topics overlap most between Epam Systems and Yandex?
The most common shared topics between Epam Systems and Yandex are Array (11 shared questions), String (8 shared questions), Hash Table (7 shared questions), Two Pointers (6 shared questions), Dynamic Programming (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Epam Systems or Yandex?
Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. Yandex has 51 Easy, 67 Medium, and 10 Hard questions. Yandex has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Epam Systems and Yandex?
Start with the 24 shared problems since they cover what both companies ask most often. Then add 20 Epam Systems-specific and 20 Yandex-specific questions to round out your prep.