Cognizant vs Zeta Interview Questions
Cognizant lists 29 LeetCode interview questions while Zeta lists 30. They share 3 problems — 10% of Cognizant's bank and 10% of Zeta's. Focus on the overlap first, then drill into 26 Cognizant-only and 27 Zeta-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 3 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cognizant and Zeta.
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 Zeta-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Zeta skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
3 Shared Questions
High-priority problems to practice for both Cognizant and Zeta.
| Problem | Difficulty |
|---|---|
| Maximum Subarray | Medium |
| Median of Two Sorted Arrays | Hard |
| Longest Substring Without Repeating Characters | Medium |
Unique to Cognizant (26)
Problems in Cognizant's list that do not appear at Zeta.
| Problem | Difficulty |
|---|---|
| Palindrome Number | Easy |
| Count Subarrays of Length Three With a Condition | Easy |
| Smallest Value of the Rearranged Number | Medium |
| 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 |
| Reverse Integer | Medium |
Unique to Zeta (27)
Problems in Zeta's list that do not appear at Cognizant.
| Problem | Difficulty |
|---|---|
| Apply Operations to Make Two Strings Equal | Medium |
| Split Array Largest Sum | Hard |
| Minimum Window Substring | Hard |
| Capacity To Ship Packages Within D Days | Medium |
| Trapping Rain Water | Hard |
| Palindrome Partitioning II | Hard |
| Task Scheduler | Medium |
| Remove Boxes | Hard |
| Next Greater Element II | Medium |
| Reverse Nodes in k-Group | Hard |
| Maximal Rectangle | Hard |
| Count Univalue Subtrees | Medium |
Frequently Asked Questions
How many LeetCode questions do Cognizant and Zeta share?
Cognizant and Zeta share 3 LeetCode interview questions. 26 problems appear only in Cognizant's list and 27 appear only in Zeta's list.
What topics overlap most between Cognizant and Zeta?
The most common shared topics between Cognizant and Zeta are Array (2 shared questions), Divide and Conquer (2 shared questions), Dynamic Programming (1 shared questions), Binary Search (1 shared questions), Hash Table (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cognizant or Zeta?
Cognizant has 18 Easy, 10 Medium, and 1 Hard questions. Zeta has 0 Easy, 20 Medium, and 10 Hard questions. Zeta has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Cognizant and Zeta?
Start with the 3 shared problems since they cover what both companies ask most often. Then add 20 Cognizant-specific and 20 Zeta-specific questions to round out your prep.