Qualcomm vs Zenefits Interview Questions
Qualcomm lists 62 LeetCode interview questions while Zenefits lists 21. They share 9 problems — 15% of Qualcomm's bank and 43% of Zenefits's. Focus on the overlap first, then drill into 53 Qualcomm-only and 12 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 9 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Qualcomm and Zenefits.
Step 2 — Company-specific depth: Add Qualcomm-specific problems like String Compression III, Maximum Number of Ones, Reverse Nodes in k-Group and Zenefits-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Zenefits skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
9 Shared Questions
High-priority problems to practice for both Qualcomm and Zenefits.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| LRU Cache | Medium |
| Reverse Linked List | Easy |
| Valid Parentheses | Easy |
| Majority Element | Easy |
| Trapping Rain Water | Hard |
| Course Schedule II | Medium |
| Median of Two Sorted Arrays | Hard |
| Generate Parentheses | Medium |
Unique to Qualcomm (53)
Problems in Qualcomm's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Maximum Number of Ones | Hard |
| Reverse Nodes in k-Group | Hard |
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Palindrome Number | Easy |
| Remove Nth Node From End of List | Medium |
| Reverse Bits | Easy |
| 3Sum | Medium |
| Rotate Image | Medium |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
Unique to Zenefits (12)
Problems in Zenefits's list that do not appear at Qualcomm.
| Problem | Difficulty |
|---|---|
| Graph Valid Tree | Medium |
| Course Schedule | Medium |
| Min Stack | Medium |
| Majority Element II | Medium |
| Excel Sheet Column Title | Easy |
| Convert Sorted List to Binary Search Tree | Medium |
| Sliding Window Maximum | Hard |
| N-Queens II | Hard |
| Valid Palindrome | Easy |
| Flatten 2D Vector | Medium |
| Shortest Distance from All Buildings | Hard |
| Verify Preorder Sequence in Binary Search Tree | Medium |
Frequently Asked Questions
How many LeetCode questions do Qualcomm and Zenefits share?
Qualcomm and Zenefits share 9 LeetCode interview questions. 53 problems appear only in Qualcomm's list and 12 appear only in Zenefits's list.
What topics overlap most between Qualcomm and Zenefits?
The most common shared topics between Qualcomm and Zenefits are Array (4 shared questions), Depth-First Search (2 shared questions), Breadth-First Search (2 shared questions), Hash Table (2 shared questions), Linked List (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Qualcomm or Zenefits?
Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Zenefits has 5 Easy, 11 Medium, and 5 Hard questions. Zenefits has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Qualcomm and Zenefits?
Start with the 9 shared problems since they cover what both companies ask most often. Then add 20 Qualcomm-specific and 12 Zenefits-specific questions to round out your prep.