Qualcomm vs Visa Interview Questions
Qualcomm lists 62 LeetCode interview questions while Visa lists 146. They share 21 problems — 34% of Qualcomm's bank and 14% of Visa's. Focus on the overlap first, then drill into 41 Qualcomm-only and 125 Visa-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 21 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Qualcomm and Visa.
Step 2 — Company-specific depth: Add Qualcomm-specific problems like String Compression III, Maximum Number of Ones, Palindrome Number and Visa-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Visa skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
21 Shared Questions
High-priority problems to practice for both Qualcomm and Visa.
| Problem | Difficulty |
|---|---|
| Reverse Nodes in k-Group | Hard |
| Number of Islands | Medium |
| LRU Cache | Medium |
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Reverse Linked List | Easy |
| Valid Parentheses | Easy |
| 3Sum | Medium |
| Rotate Image | Medium |
| Trapping Rain Water | Hard |
| Unique Paths | Medium |
| Design Memory Allocator | Medium |
| Merge Intervals | Medium |
| Kth Largest Element in an Array | Medium |
| Merge Sorted Array | Easy |
| Median of Two Sorted Arrays | Hard |
| Subarray Sum Equals K | Medium |
| Edit Distance | Medium |
| Container With Most Water | Medium |
| Merge Two Sorted Lists | Easy |
| Longest Common Prefix | Easy |
Unique to Qualcomm (41)
Problems in Qualcomm's list that do not appear at Visa.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Maximum Number of Ones | Hard |
| Palindrome Number | Easy |
| Remove Nth Node From End of List | Medium |
| Reverse Bits | Easy |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
| Linked List Cycle | Easy |
| Reverse String | Easy |
| Middle of the Linked List | Easy |
| Pow(x, n) | Medium |
| Design Circular Queue | Medium |
Unique to Visa (125)
Problems in Visa's list that do not appear at Qualcomm.
Frequently Asked Questions
How many LeetCode questions do Qualcomm and Visa share?
Qualcomm and Visa share 21 LeetCode interview questions. 41 problems appear only in Qualcomm's list and 125 appear only in Visa's list.
What topics overlap most between Qualcomm and Visa?
The most common shared topics between Qualcomm and Visa are Array (13 shared questions), Hash Table (5 shared questions), Linked List (4 shared questions), String (4 shared questions), Two Pointers (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Qualcomm or Visa?
Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Visa has 32 Easy, 92 Medium, and 22 Hard questions. Visa has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Qualcomm and Visa?
Start with the 21 shared problems since they cover what both companies ask most often. Then add 20 Qualcomm-specific and 20 Visa-specific questions to round out your prep.