Siemens vs TCS Interview Questions
Siemens lists 25 LeetCode interview questions while TCS lists 228. They share 17 problems — 68% of Siemens's bank and 7% of TCS's. Focus on the overlap first, then drill into 8 Siemens-only and 211 TCS-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 17 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Siemens and TCS.
Step 2 — Company-specific depth: Add Siemens-specific problems like Minimized Maximum of Products Distributed to Any Store, Peaks in Array, The Skyline Problem and TCS-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Siemens skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
17 Shared Questions
High-priority problems to practice for both Siemens and TCS.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| Merge Intervals | Medium |
| Valid Parentheses | Easy |
| Merge Two Sorted Lists | Easy |
| LRU Cache | Medium |
| Two Sum | Easy |
| First Missing Positive | Hard |
| Valid Anagram | Easy |
| Remove Duplicates from Sorted Array | Easy |
| Maximum Product of Three Numbers | Easy |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
| Palindrome Number | Easy |
| Maximum Product Subarray | Medium |
| Top K Frequent Elements | Medium |
| Rotate Array | Medium |
| Best Time to Buy and Sell Stock | Easy |
Unique to Siemens (8)
Problems in Siemens's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Minimized Maximum of Products Distributed to Any Store | Medium |
| Peaks in Array | Hard |
| The Skyline Problem | Hard |
| Minimum Add to Make Parentheses Valid | Medium |
| Angle Between Hands of a Clock | Medium |
| Single Number III | Medium |
| Clone Graph | Medium |
| Strong Password Checker | Hard |
Unique to TCS (211)
Problems in TCS's list that do not appear at Siemens.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Majority Element | Easy |
| Longest Common Prefix | Easy |
| Sort Colors | Medium |
| Find the Index of the First Occurrence in a String | Easy |
| Single Number | Easy |
| Second Highest Salary | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
Frequently Asked Questions
How many LeetCode questions do Siemens and TCS share?
Siemens and TCS share 17 LeetCode interview questions. 8 problems appear only in Siemens's list and 211 appear only in TCS's list.
What topics overlap most between Siemens and TCS?
The most common shared topics between Siemens and TCS are Array (11 shared questions), Hash Table (6 shared questions), Sorting (5 shared questions), String (4 shared questions), Two Pointers (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Siemens or TCS?
Siemens has 8 Easy, 13 Medium, and 4 Hard questions. TCS has 99 Easy, 108 Medium, and 21 Hard questions. Siemens has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Siemens and TCS?
Start with the 17 shared problems since they cover what both companies ask most often. Then add 8 Siemens-specific and 20 TCS-specific questions to round out your prep.