X vs Yandex Interview Questions
X lists 51 LeetCode interview questions while Yandex lists 128. They share 9 problems — 18% of X's bank and 7% of Yandex's. Focus on the overlap first, then drill into 42 X-only and 119 Yandex-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 9 overlapping problems first. These are the highest-yield questions for candidates interviewing at both X and Yandex.
Step 2 — Company-specific depth: Add X-specific problems like Tweet Counts Per Frequency, Flatten Nested List Iterator, Implement Trie (Prefix Tree) and Yandex-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: X skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
9 Shared Questions
High-priority problems to practice for both X and Yandex.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Merge Intervals | Medium |
| LRU Cache | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| One Edit Distance | Medium |
| Reverse Linked List | Easy |
| Lowest Common Ancestor of a Binary Search Tree | Medium |
Unique to X (42)
Problems in X's list that do not appear at Yandex.
| Problem | Difficulty |
|---|---|
| Tweet Counts Per Frequency | Medium |
| Flatten Nested List Iterator | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Design Twitter | Medium |
| Binary Gap | Easy |
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Word Break II | Hard |
| Alien Dictionary | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| Trapping Rain Water II | Hard |
Unique to Yandex (119)
Problems in Yandex's list that do not appear at X.
| Problem | Difficulty |
|---|---|
| Longest Subarray of 1's After Deleting One Element | Medium |
| Summary Ranges | Easy |
| Maximize Distance to Closest Person | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Find K Closest Elements | Medium |
| Subarray Sum Equals K | Medium |
| String Compression | Medium |
| Valid Palindrome II | Easy |
| Move Zeroes | Easy |
| Permutation in String | Medium |
| Isomorphic Strings | Easy |
| Line Reflection | Medium |
Frequently Asked Questions
How many LeetCode questions do X and Yandex share?
X and Yandex share 9 LeetCode interview questions. 42 problems appear only in X's list and 119 appear only in Yandex's list.
What topics overlap most between X and Yandex?
The most common shared topics between X and Yandex are Array (3 shared questions), Linked List (3 shared questions), Two Pointers (2 shared questions), Stack (2 shared questions), Hash Table (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: X or Yandex?
X has 8 Easy, 31 Medium, and 12 Hard questions. Yandex has 51 Easy, 67 Medium, and 10 Hard questions. X has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both X and Yandex?
Start with the 9 shared problems since they cover what both companies ask most often. Then add 20 X-specific and 20 Yandex-specific questions to round out your prep.