TCS vs Zenefits Interview Questions
TCS lists 228 LeetCode interview questions while Zenefits lists 21. They share 13 problems — 6% of TCS's bank and 62% of Zenefits's. Focus on the overlap first, then drill into 215 TCS-only and 8 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 13 overlapping problems first. These are the highest-yield questions for candidates interviewing at both TCS and Zenefits.
Step 2 — Company-specific depth: Add TCS-specific problems like Friday Purchases I, Two Sum, Longest Palindromic Substring and Zenefits-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Zenefits skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
13 Shared Questions
High-priority problems to practice for both TCS and Zenefits.
| Problem | Difficulty |
|---|---|
| Majority Element | Easy |
| Valid Parentheses | Easy |
| Median of Two Sorted Arrays | Hard |
| Valid Palindrome | Easy |
| Trapping Rain Water | Hard |
| Generate Parentheses | Medium |
| Min Stack | Medium |
| Sliding Window Maximum | Hard |
| LRU Cache | Medium |
| Reverse Linked List | Easy |
| Majority Element II | Medium |
| Convert Sorted List to Binary Search Tree | Medium |
| Number of Islands | Medium |
Unique to TCS (215)
Problems in TCS's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Two Sum | Easy |
| Longest Palindromic Substring | Medium |
| Palindrome Number | Easy |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Longest Common Prefix | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Sort Colors | Medium |
| Valid Anagram | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| Single Number | Easy |
Unique to Zenefits (8)
Problems in Zenefits's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Graph Valid Tree | Medium |
| Course Schedule | Medium |
| Course Schedule II | Medium |
| Excel Sheet Column Title | Easy |
| N-Queens II | Hard |
| Flatten 2D Vector | Medium |
| Shortest Distance from All Buildings | Hard |
| Verify Preorder Sequence in Binary Search Tree | Medium |
Frequently Asked Questions
How many LeetCode questions do TCS and Zenefits share?
TCS and Zenefits share 13 LeetCode interview questions. 215 problems appear only in TCS's list and 8 appear only in Zenefits's list.
What topics overlap most between TCS and Zenefits?
The most common shared topics between TCS and Zenefits are Array (6 shared questions), Hash Table (3 shared questions), Divide and Conquer (3 shared questions), String (3 shared questions), Stack (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: TCS or Zenefits?
TCS has 99 Easy, 108 Medium, and 21 Hard questions. Zenefits has 5 Easy, 11 Medium, and 5 Hard questions. Zenefits has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both TCS and Zenefits?
Start with the 13 shared problems since they cover what both companies ask most often. Then add 20 TCS-specific and 8 Zenefits-specific questions to round out your prep.