ByteDance vs Qualcomm Interview Questions
ByteDance lists 64 LeetCode interview questions while Qualcomm lists 62. They share 14 problems — 22% of ByteDance's bank and 23% of Qualcomm's. Focus on the overlap first, then drill into 50 ByteDance-only and 48 Qualcomm-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 14 overlapping problems first. These are the highest-yield questions for candidates interviewing at both ByteDance and Qualcomm.
Step 2 — Company-specific depth: Add ByteDance-specific problems like Remove Duplicate Letters, Smallest Subsequence of Distinct Characters, First Day Where You Have Been in All the Rooms and Qualcomm-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
14 Shared Questions
High-priority problems to practice for both ByteDance and Qualcomm.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Islands | Medium |
| Merge Intervals | Medium |
| Design Memory Allocator | Medium |
| Two Sum | Easy |
| Trapping Rain Water | Hard |
| Longest Substring Without Repeating Characters | Medium |
| Kth Largest Element in an Array | Medium |
| Climbing Stairs | Easy |
| Trapping Rain Water II | Hard |
| Subarray Sum Equals K | Medium |
| Merge k Sorted Lists | Hard |
| Valid Parentheses | Easy |
| Unique Paths | Medium |
Unique to ByteDance (50)
Problems in ByteDance's list that do not appear at Qualcomm.
| Problem | Difficulty |
|---|---|
| Remove Duplicate Letters | Medium |
| Smallest Subsequence of Distinct Characters | Medium |
| First Day Where You Have Been in All the Rooms | Medium |
| Course Schedule | Medium |
| Combination Sum | Medium |
| Basic Calculator II | Medium |
| Shortest Bridge | Medium |
| House Robber | Medium |
| Maximal Square | Medium |
| Regular Expression Matching | Hard |
| Top K Frequent Elements | Medium |
| Word Ladder | Hard |
Unique to Qualcomm (48)
Problems in Qualcomm's list that do not appear at ByteDance.
| 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 |
| 3Sum | Medium |
| Rotate Image | Medium |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
| Linked List Cycle | Easy |
Frequently Asked Questions
How many LeetCode questions do ByteDance and Qualcomm share?
ByteDance and Qualcomm share 14 LeetCode interview questions. 50 problems appear only in ByteDance's list and 48 appear only in Qualcomm's list.
What topics overlap most between ByteDance and Qualcomm?
The most common shared topics between ByteDance and Qualcomm are Array (8 shared questions), Hash Table (5 shared questions), Dynamic Programming (3 shared questions), Heap (Priority Queue) (3 shared questions), Linked List (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: ByteDance or Qualcomm?
ByteDance has 4 Easy, 51 Medium, and 9 Hard questions. Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Qualcomm has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both ByteDance and Qualcomm?
Start with the 14 shared problems since they cover what both companies ask most often. Then add 20 ByteDance-specific and 20 Qualcomm-specific questions to round out your prep.