Infosys vs Qualcomm Interview Questions
Infosys lists 105 LeetCode interview questions while Qualcomm lists 62. They share 30 problems — 29% of Infosys's bank and 48% of Qualcomm's. Focus on the overlap first, then drill into 75 Infosys-only and 32 Qualcomm-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 30 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Infosys and Qualcomm.
Step 2 — Company-specific depth: Add Infosys-specific problems like Maximum Good Subtree Score, Find Building Where Alice and Bob Can Meet, Minimum Reverse Operations and Qualcomm-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Infosys skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
30 Shared Questions
High-priority problems to practice for both Infosys and Qualcomm.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Merge Sorted Array | Easy |
| Palindrome Number | Easy |
| Remove Duplicates from Sorted Array | Easy |
| Reverse String | Easy |
| Rotate Image | Medium |
| Trapping Rain Water | Hard |
| Longest Common Prefix | Easy |
| Merge Intervals | Medium |
| Generate Parentheses | Medium |
| Reverse Integer | Medium |
| 3Sum | Medium |
| Move Zeroes | Easy |
| Kth Largest Element in an Array | Medium |
| Climbing Stairs | Easy |
| Reverse Nodes in k-Group | Hard |
| Number of Islands | Medium |
| Merge Two Sorted Lists | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| Linked List Cycle | Easy |
| String to Integer (atoi) | Medium |
| Maximum Depth of Binary Tree | Easy |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Edit Distance | Medium |
| Pow(x, n) | Medium |
| Container With Most Water | Medium |
| Implement Queue using Stacks | Easy |
Unique to Infosys (75)
Problems in Infosys's list that do not appear at Qualcomm.
Unique to Qualcomm (32)
Problems in Qualcomm's list that do not appear at Infosys.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Maximum Number of Ones | Hard |
| LRU Cache | Medium |
| Reverse Linked List | Easy |
| Remove Nth Node From End of List | Medium |
| Reverse Bits | Easy |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
| Middle of the Linked List | Easy |
| Design Circular Queue | Medium |
| Count Array Pairs Divisible by K | Hard |
| Majority Element | Easy |
Frequently Asked Questions
How many LeetCode questions do Infosys and Qualcomm share?
Infosys and Qualcomm share 30 LeetCode interview questions. 75 problems appear only in Infosys's list and 32 appear only in Qualcomm's list.
What topics overlap most between Infosys and Qualcomm?
The most common shared topics between Infosys and Qualcomm are Array (13 shared questions), Two Pointers (9 shared questions), String (8 shared questions), Math (5 shared questions), Hash Table (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Infosys or Qualcomm?
Infosys has 32 Easy, 57 Medium, and 16 Hard questions. Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Infosys has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Infosys and Qualcomm?
Start with the 30 shared problems since they cover what both companies ask most often. Then add 20 Infosys-specific and 20 Qualcomm-specific questions to round out your prep.