Cognizant vs NVIDIA Interview Questions
Cognizant lists 29 LeetCode interview questions while NVIDIA lists 136. They share 16 problems — 55% of Cognizant's bank and 12% of NVIDIA's. Focus on the overlap first, then drill into 13 Cognizant-only and 120 NVIDIA-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 16 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cognizant and NVIDIA.
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 NVIDIA-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: NVIDIA skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
16 Shared Questions
High-priority problems to practice for both Cognizant and NVIDIA.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Fibonacci Number | 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 |
| Count Primes | Medium |
| 3Sum | Medium |
| Move Zeroes | Easy |
| Merge Two Sorted Lists | Easy |
| Add Two Numbers | Medium |
| Fizz Buzz | Easy |
Unique to Cognizant (13)
Problems in Cognizant's list that do not appear at NVIDIA.
Unique to NVIDIA (120)
Problems in NVIDIA's list that do not appear at Cognizant.
| Problem | Difficulty |
|---|---|
| Special Binary String | Hard |
| LRU Cache | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Merge k Sorted Lists | Hard |
| Group Anagrams | Medium |
| Minimum Operations to Reduce an Integer to 0 | Medium |
| Last Stone Weight | Easy |
| Maximize Greatness of an Array | Medium |
| Number of Islands | Medium |
| Maximum Number of Visible Points | Hard |
| Restore IP Addresses | Medium |
| Search in Rotated Sorted Array | Medium |
Frequently Asked Questions
How many LeetCode questions do Cognizant and NVIDIA share?
Cognizant and NVIDIA share 16 LeetCode interview questions. 13 problems appear only in Cognizant's list and 120 appear only in NVIDIA's list.
What topics overlap most between Cognizant and NVIDIA?
The most common shared topics between Cognizant and NVIDIA are Array (7 shared questions), String (6 shared questions), Math (4 shared questions), Two Pointers (4 shared questions), Hash Table (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cognizant or NVIDIA?
Cognizant has 18 Easy, 10 Medium, and 1 Hard questions. NVIDIA has 32 Easy, 89 Medium, and 15 Hard questions. NVIDIA has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cognizant and NVIDIA?
Start with the 16 shared problems since they cover what both companies ask most often. Then add 13 Cognizant-specific and 20 NVIDIA-specific questions to round out your prep.