Twitter vs Visa Interview Questions
Twitter lists 53 LeetCode interview questions while Visa lists 146. They share 9 problems — 17% of Twitter's bank and 6% of Visa's. Focus on the overlap first, then drill into 44 Twitter-only and 137 Visa-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 Twitter and Visa.
Step 2 — Company-specific depth: Add Twitter-specific problems like Regular Expression Matching, Integer to Roman, Merge k Sorted Lists and Visa-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Twitter 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 Twitter and Visa.
| Problem | Difficulty |
|---|---|
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| Merge Intervals | Medium |
| Word Break II | Hard |
| LRU Cache | Medium |
| Happy Number | Easy |
| Reverse Linked List | Easy |
| Number of Black Blocks | Medium |
| Rotting Oranges | Medium |
Unique to Twitter (44)
Problems in Twitter's list that do not appear at Visa.
| Problem | Difficulty |
|---|---|
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Merge k Sorted Lists | Hard |
| Multiply Strings | Medium |
| Wildcard Matching | Hard |
| Permutation Sequence | Hard |
| Pascal's Triangle | Easy |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| One Edit Distance | Medium |
| Implement Trie (Prefix Tree) | Medium |
| The Skyline Problem | Hard |
Unique to Visa (137)
Problems in Visa's list that do not appear at Twitter.
Frequently Asked Questions
How many LeetCode questions do Twitter and Visa share?
Twitter and Visa share 9 LeetCode interview questions. 44 problems appear only in Twitter's list and 137 appear only in Visa's list.
What topics overlap most between Twitter and Visa?
The most common shared topics between Twitter and Visa are Array (5 shared questions), Hash Table (4 shared questions), String (2 shared questions), Stack (2 shared questions), Two Pointers (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Twitter or Visa?
Twitter has 8 Easy, 33 Medium, and 12 Hard questions. Visa has 32 Easy, 92 Medium, and 22 Hard questions. Twitter has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Twitter and Visa?
Start with the 9 shared problems since they cover what both companies ask most often. Then add 20 Twitter-specific and 20 Visa-specific questions to round out your prep.