Qualcomm vs TCS Interview Questions
Qualcomm lists 62 LeetCode interview questions while TCS lists 228. They share 43 problems — 69% of Qualcomm's bank and 19% of TCS's. Focus on the overlap first, then drill into 19 Qualcomm-only and 185 TCS-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 43 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Qualcomm and TCS.
Step 2 — Company-specific depth: Add Qualcomm-specific problems like Maximum Number of Ones, Reverse Nodes in k-Group, Reverse Bits and TCS-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Qualcomm skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
43 Shared Questions
High-priority problems to practice for both Qualcomm and TCS.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Number of Islands | Medium |
| LRU Cache | Medium |
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Reverse Linked List | Easy |
| Valid Parentheses | Easy |
| Palindrome Number | Easy |
| Remove Nth Node From End of List | Medium |
| 3Sum | Medium |
| Rotate Image | Medium |
| Power of Two | Easy |
| Linked List Cycle | Easy |
| Reverse String | Easy |
| Middle of the Linked List | Easy |
| Pow(x, n) | Medium |
| Move Zeroes | Easy |
| Climbing Stairs | Easy |
| String to Integer (atoi) | Medium |
| Majority Element | Easy |
| Count the Number of Fair Pairs | Medium |
| Trapping Rain Water | Hard |
| Peak Index in a Mountain Array | Medium |
| Unique Paths | Medium |
| Swap Nodes in Pairs | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Length of Last Word | Easy |
| Serialize and Deserialize Binary Tree | Hard |
| Merge Intervals | Medium |
| Maximum Depth of Binary Tree | Easy |
Showing top 30 of 43 shared problems.
Unique to Qualcomm (19)
Problems in Qualcomm's list that do not appear at TCS.
Unique to TCS (185)
Problems in TCS's list that do not appear at Qualcomm.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Longest Palindromic Substring | Medium |
| Maximum Subarray | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Sort Colors | Medium |
| Valid Anagram | Easy |
| Second Highest Salary | Medium |
| Rotate Array | Medium |
| Jump Game | Medium |
| Contains Duplicate | Easy |
| Remove Letter To Equalize Frequency | Easy |
| Maximum Ascending Subarray Sum | Easy |
Frequently Asked Questions
How many LeetCode questions do Qualcomm and TCS share?
Qualcomm and TCS share 43 LeetCode interview questions. 19 problems appear only in Qualcomm's list and 185 appear only in TCS's list.
What topics overlap most between Qualcomm and TCS?
The most common shared topics between Qualcomm and TCS are Array (11 shared questions), Two Pointers (9 shared questions), String (7 shared questions), Linked List (6 shared questions), Math (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Qualcomm or TCS?
Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. TCS has 99 Easy, 108 Medium, and 21 Hard questions. Qualcomm has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Qualcomm and TCS?
Start with the 43 shared problems since they cover what both companies ask most often. Then add 19 Qualcomm-specific and 20 TCS-specific questions to round out your prep.