Visa vs X Interview Questions
Visa lists 146 LeetCode interview questions while X lists 51. They share 8 problems — 5% of Visa's bank and 16% of X's. Focus on the overlap first, then drill into 138 Visa-only and 43 X-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 8 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Visa and X.
Step 2 — Company-specific depth: Add Visa-specific problems like Text Justification, Length of Longest V-Shaped Diagonal Segment, Rotating the Box and X-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
8 Shared Questions
High-priority problems to practice for both Visa and X.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Black Blocks | Medium |
| Merge Intervals | Medium |
| Trapping Rain Water | Hard |
| Valid Parentheses | Easy |
| Reverse Linked List | Easy |
| Happy Number | Easy |
| Word Break II | Hard |
Unique to Visa (138)
Problems in Visa's list that do not appear at X.
Unique to X (43)
Problems in X's list that do not appear at Visa.
| Problem | Difficulty |
|---|---|
| Tweet Counts Per Frequency | Medium |
| Flatten Nested List Iterator | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Design Twitter | Medium |
| Binary Gap | Easy |
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Alien Dictionary | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| Merge k Sorted Lists | Hard |
Frequently Asked Questions
How many LeetCode questions do Visa and X share?
Visa and X share 8 LeetCode interview questions. 138 problems appear only in Visa's list and 43 appear only in X's list.
What topics overlap most between Visa and X?
The most common shared topics between Visa and X are Hash Table (4 shared questions), Array (4 shared questions), Linked List (2 shared questions), Two Pointers (2 shared questions), Dynamic Programming (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Visa or X?
Visa has 32 Easy, 92 Medium, and 22 Hard questions. X has 8 Easy, 31 Medium, and 12 Hard questions. X has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Visa and X?
Start with the 8 shared problems since they cover what both companies ask most often. Then add 20 Visa-specific and 20 X-specific questions to round out your prep.