Cognizant vs Google Interview Questions
Cognizant lists 29 LeetCode interview questions while Google lists 2,305. They share 28 problems — 97% of Cognizant's bank and 1% of Google's. Focus on the overlap first, then drill into 1 Cognizant-only and 2,277 Google-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 28 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cognizant and Google.
Step 2 — Company-specific depth: Add Cognizant-specific problems like Smallest Value of the Rearranged Number and Google-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
28 Shared Questions
High-priority problems to practice for both Cognizant and Google.
| Problem | Difficulty |
|---|---|
| Palindrome Number | Easy |
| Count Subarrays of Length Three With a Condition | Easy |
| Two Sum | Easy |
| Fibonacci Number | Easy |
| Longest Palindromic Substring | Medium |
| Valid Anagram | Easy |
| Second Highest Salary | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Longest Common Prefix | Easy |
| Managers with at Least 5 Direct Reports | Medium |
| Maximum Subarray | Medium |
| Reverse Integer | Medium |
| Product Sales Analysis I | Easy |
| Valid Parentheses | Easy |
| Median of Two Sorted Arrays | Hard |
| Longest Substring Without Repeating Characters | Medium |
| Merge Sorted Array | Easy |
| Count Primes | Medium |
| 3Sum | Medium |
| Happy Number | Easy |
| Move Zeroes | Easy |
| Binary Search | Easy |
| Merge Two Sorted Lists | Easy |
| Add Two Numbers | Medium |
| Fizz Buzz | Easy |
| Rising Temperature | Easy |
| Students and Examinations | Easy |
| Search Insert Position | Easy |
Unique to Cognizant (1)
Problems in Cognizant's list that do not appear at Google.
| Problem | Difficulty |
|---|---|
| Smallest Value of the Rearranged Number | Medium |
Unique to Google (2,277)
Problems in Google's list that do not appear at Cognizant.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Best Time to Buy and Sell Stock | Easy |
| Create Hello World Function | Easy |
| Merge Strings Alternately | Easy |
| Longest Consecutive Sequence | Medium |
| Container With Most Water | Medium |
| Recyclable and Low Fat Products | Easy |
| Majority Element | Easy |
| Roman to Integer | Easy |
| Merge Intervals | Medium |
| Number of Islands | Medium |
| Subarray Sum Equals K | Medium |
Frequently Asked Questions
How many LeetCode questions do Cognizant and Google share?
Cognizant and Google share 28 LeetCode interview questions. 1 problems appear only in Cognizant's list and 2277 appear only in Google's list.
What topics overlap most between Cognizant and Google?
The most common shared topics between Cognizant and Google are Array (11 shared questions), Math (7 shared questions), Two Pointers (6 shared questions), String (6 shared questions), Database (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cognizant or Google?
Cognizant has 18 Easy, 10 Medium, and 1 Hard questions. Google has 601 Easy, 1205 Medium, and 499 Hard questions. Google has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cognizant and Google?
Start with the 28 shared problems since they cover what both companies ask most often. Then add 1 Cognizant-specific and 20 Google-specific questions to round out your prep.