Apple vs Epam Systems Interview Questions
Apple lists 300 LeetCode interview questions while Epam Systems lists 46. They share 35 problems — 12% of Apple's bank and 76% of Epam Systems's. Focus on the overlap first, then drill into 265 Apple-only and 11 Epam Systems-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 35 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and Epam Systems.
Step 2 — Company-specific depth: Add Apple-specific problems like Number of Islands, Design Hit Counter, Valid Sudoku and Epam Systems-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Apple skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
35 Shared Questions
High-priority problems to practice for both Apple and Epam Systems.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Two Sum | Easy |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Common Prefix | Easy |
| Rotate Array | Medium |
| Reverse Linked List | Easy |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Reverse Words in a String | Medium |
| Kth Largest Element in an Array | Medium |
| Maximum Subarray | Medium |
| Reverse Integer | Medium |
| Trapping Rain Water | Hard |
| Median of Two Sorted Arrays | Hard |
| Merge Two Sorted Lists | Easy |
| Move Zeroes | Easy |
| Merge Sorted Array | Easy |
| String Compression | Medium |
| 3Sum | Medium |
| Longest Consecutive Sequence | Medium |
| First Unique Character in a String | Easy |
| Two Sum II - Input Array Is Sorted | Medium |
| Longest Palindromic Substring | Medium |
| Generate Parentheses | Medium |
| Reverse String | Easy |
| Roman to Integer | Easy |
| Edit Distance | Medium |
Showing top 30 of 35 shared problems.
Unique to Apple (265)
Problems in Apple's list that do not appear at Epam Systems.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| Design Hit Counter | Medium |
| Valid Sudoku | Medium |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Product of Array Except Self | Medium |
| Valid Palindrome | Easy |
| Rotate Image | Medium |
| Spiral Matrix | Medium |
| Best Time to Buy and Sell Stock II | Medium |
| Merge k Sorted Lists | Hard |
| Meeting Rooms II | Medium |
Unique to Epam Systems (11)
Problems in Epam Systems's list that do not appear at Apple.
| Problem | Difficulty |
|---|---|
| Minimum Operations to Make a Uni-Value Grid | Medium |
| Partition Equal Subset Sum | Medium |
| Palindrome Number | Easy |
| Maximum Difference Between Node and Ancestor | Medium |
| Pow(x, n) | Medium |
| Duplicate Emails | Easy |
| Count Salary Categories | Medium |
| Multiply Strings | Medium |
| Unique Paths | Medium |
| Counter | Easy |
| Sort Characters By Frequency | Medium |
Frequently Asked Questions
How many LeetCode questions do Apple and Epam Systems share?
Apple and Epam Systems share 35 LeetCode interview questions. 265 problems appear only in Apple's list and 11 appear only in Epam Systems's list.
What topics overlap most between Apple and Epam Systems?
The most common shared topics between Apple and Epam Systems are Array (16 shared questions), String (12 shared questions), Two Pointers (10 shared questions), Hash Table (8 shared questions), Sorting (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or Epam Systems?
Apple has 76 Easy, 178 Medium, and 46 Hard questions. Epam Systems has 16 Easy, 27 Medium, and 3 Hard questions. Apple has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Apple and Epam Systems?
Start with the 35 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 11 Epam Systems-specific questions to round out your prep.