Google vs Visa Interview Questions
Google lists 2,305 LeetCode interview questions while Visa lists 146. They share 121 problems — 5% of Google's bank and 83% of Visa's. Focus on the overlap first, then drill into 2,184 Google-only and 25 Visa-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 121 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Google and Visa.
Step 2 — Company-specific depth: Add Google-specific problems like Add Two Numbers, Palindrome Number, Create Hello World Function and Visa-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Google skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
121 Shared Questions
High-priority problems to practice for both Google and Visa.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Trapping Rain Water | Hard |
| Median of Two Sorted Arrays | Hard |
| Longest Common Prefix | Easy |
| Merge Sorted Array | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| 3Sum | Medium |
| Longest Palindromic Substring | Medium |
| Longest Consecutive Sequence | Medium |
| Container With Most Water | Medium |
| Valid Parentheses | Easy |
| Merge Intervals | Medium |
| Number of Islands | Medium |
| Maximum Subarray | Medium |
| Subarray Sum Equals K | Medium |
| Merge Two Sorted Lists | Easy |
| Spiral Matrix | Medium |
| Meeting Rooms II | Medium |
| Reverse Linked List | Easy |
| Search in Rotated Sorted Array | Medium |
| LRU Cache | Medium |
| Largest Rectangle in Histogram | Hard |
| Letter Combinations of a Phone Number | Medium |
| Top K Frequent Elements | Medium |
| Find Peak Element | Medium |
| Rotate Array | Medium |
| Valid Anagram | Easy |
| Kth Largest Element in an Array | Medium |
| Group Anagrams | Medium |
Showing top 30 of 121 shared problems.
Unique to Google (2,184)
Problems in Google's list that do not appear at Visa.
| Problem | Difficulty |
|---|---|
| Add Two Numbers | Medium |
| Palindrome Number | Easy |
| Create Hello World Function | Easy |
| Merge Strings Alternately | Easy |
| Recyclable and Low Fat Products | Easy |
| Majority Element | Easy |
| Roman to Integer | Easy |
| Reverse Integer | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Climbing Stairs | Easy |
| Next Permutation | Medium |
| Generate Parentheses | Medium |
Unique to Visa (25)
Problems in Visa's list that do not appear at Google.
Frequently Asked Questions
How many LeetCode questions do Google and Visa share?
Google and Visa share 121 LeetCode interview questions. 2184 problems appear only in Google's list and 25 appear only in Visa's list.
What topics overlap most between Google and Visa?
The most common shared topics between Google and Visa are Array (22 shared questions), Hash Table (9 shared questions), Sorting (8 shared questions), Two Pointers (7 shared questions), String (7 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Google or Visa?
Google has 601 Easy, 1205 Medium, and 499 Hard questions. Visa has 32 Easy, 92 Medium, and 22 Hard questions. Google has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Google and Visa?
Start with the 121 shared problems since they cover what both companies ask most often. Then add 20 Google-specific and 20 Visa-specific questions to round out your prep.