Cognizant vs Visa Interview Questions
Cognizant lists 29 LeetCode interview questions while Visa lists 146. They share 12 problems — 41% of Cognizant's bank and 8% of Visa's. Focus on the overlap first, then drill into 17 Cognizant-only and 134 Visa-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 12 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cognizant and Visa.
Step 2 — Company-specific depth: Add Cognizant-specific problems like Palindrome Number, Count Subarrays of Length Three With a Condition, Smallest Value of the Rearranged Number and Visa-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Visa skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
12 Shared Questions
High-priority problems to practice for both Cognizant and Visa.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Palindromic Substring | Medium |
| Valid Anagram | Easy |
| Longest Common Prefix | Easy |
| Maximum Subarray | Medium |
| Valid Parentheses | Easy |
| Median of Two Sorted Arrays | Hard |
| Longest Substring Without Repeating Characters | Medium |
| Merge Sorted Array | Easy |
| 3Sum | Medium |
| Happy Number | Easy |
| Merge Two Sorted Lists | Easy |
Unique to Cognizant (17)
Problems in Cognizant's list that do not appear at Visa.
| Problem | Difficulty |
|---|---|
| Palindrome Number | Easy |
| Count Subarrays of Length Three With a Condition | Easy |
| Smallest Value of the Rearranged Number | Medium |
| Fibonacci Number | Easy |
| Second Highest Salary | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Managers with at Least 5 Direct Reports | Medium |
| Reverse Integer | Medium |
| Product Sales Analysis I | Easy |
| Count Primes | Medium |
| Move Zeroes | Easy |
| Binary Search | Easy |
Unique to Visa (134)
Problems in Visa's list that do not appear at Cognizant.
Frequently Asked Questions
How many LeetCode questions do Cognizant and Visa share?
Cognizant and Visa share 12 LeetCode interview questions. 17 problems appear only in Cognizant's list and 134 appear only in Visa's list.
What topics overlap most between Cognizant and Visa?
The most common shared topics between Cognizant and Visa are Array (5 shared questions), String (5 shared questions), Hash Table (4 shared questions), Two Pointers (4 shared questions), Sorting (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cognizant or Visa?
Cognizant has 18 Easy, 10 Medium, and 1 Hard questions. Visa has 32 Easy, 92 Medium, and 22 Hard questions. Visa has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cognizant and Visa?
Start with the 12 shared problems since they cover what both companies ask most often. Then add 17 Cognizant-specific and 20 Visa-specific questions to round out your prep.