PayPal vs Qualcomm Interview Questions
PayPal lists 105 LeetCode interview questions while Qualcomm lists 62. They share 20 problems — 19% of PayPal's bank and 32% of Qualcomm's. Focus on the overlap first, then drill into 85 PayPal-only and 42 Qualcomm-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 20 overlapping problems first. These are the highest-yield questions for candidates interviewing at both PayPal and Qualcomm.
Step 2 — Company-specific depth: Add PayPal-specific problems like Zigzag Conversion, Minimum Absolute Difference, Longest Increasing Subsequence and Qualcomm-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: PayPal skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
20 Shared Questions
High-priority problems to practice for both PayPal and Qualcomm.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Islands | Medium |
| Count Array Pairs Divisible by K | Hard |
| Two Sum | Easy |
| Merge Intervals | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Subarray Sum Equals K | Medium |
| Container With Most Water | Medium |
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| Rotate Image | Medium |
| Kth Largest Element in an Array | Medium |
| Median of Two Sorted Arrays | Hard |
| 3Sum | Medium |
| Move Zeroes | Easy |
| Swap Nodes in Pairs | Medium |
| Serialize and Deserialize Binary Tree | Hard |
| Climbing Stairs | Easy |
| Maximum Product Subarray | Medium |
| Find the Index of the First Occurrence in a String | Easy |
Unique to PayPal (85)
Problems in PayPal's list that do not appear at Qualcomm.
Unique to Qualcomm (42)
Problems in Qualcomm's list that do not appear at PayPal.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Maximum Number of Ones | Hard |
| Reverse Nodes in k-Group | Hard |
| Reverse Linked List | Easy |
| 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 |
Frequently Asked Questions
How many LeetCode questions do PayPal and Qualcomm share?
PayPal and Qualcomm share 20 LeetCode interview questions. 85 problems appear only in PayPal's list and 42 appear only in Qualcomm's list.
What topics overlap most between PayPal and Qualcomm?
The most common shared topics between PayPal and Qualcomm are Array (13 shared questions), Hash Table (5 shared questions), Two Pointers (5 shared questions), String (4 shared questions), Math (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: PayPal or Qualcomm?
PayPal has 19 Easy, 69 Medium, and 17 Hard questions. Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. PayPal has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both PayPal and Qualcomm?
Start with the 20 shared problems since they cover what both companies ask most often. Then add 20 PayPal-specific and 20 Qualcomm-specific questions to round out your prep.