Apple vs Qualcomm Interview Questions
Apple lists 300 LeetCode interview questions while Qualcomm lists 62. They share 43 problems — 14% of Apple's bank and 69% of Qualcomm's. Focus on the overlap first, then drill into 257 Apple-only and 19 Qualcomm-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 43 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and Qualcomm.
Step 2 — Company-specific depth: Add Apple-specific problems like Best Time to Buy and Sell Stock, Design Hit Counter, Rotate Array and Qualcomm-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Apple skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
43 Shared Questions
High-priority problems to practice for both Apple and Qualcomm.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Two Sum | Easy |
| Number of Islands | Medium |
| Merge Intervals | Medium |
| Longest Common Prefix | Easy |
| Reverse Linked List | Easy |
| Course Schedule II | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Rotate Image | Medium |
| Kth Largest Element in an Array | Medium |
| Reverse Integer | Medium |
| Merge k Sorted Lists | Hard |
| Trapping Rain Water | Hard |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Reverse Bits | Easy |
| Design Circular Queue | Medium |
| Number of 1 Bits | Easy |
| Merge Two Sorted Lists | Easy |
| Move Zeroes | Easy |
| Climbing Stairs | Easy |
| Merge Sorted Array | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| 3Sum | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Maximum Depth of Binary Tree | Easy |
| Remove Nth Node From End of List | Medium |
| Serialize and Deserialize Binary Tree | Hard |
| Container With Most Water | Medium |
Showing top 30 of 43 shared problems.
Unique to Apple (257)
Problems in Apple's list that do not appear at Qualcomm.
| Problem | Difficulty |
|---|---|
| Best Time to Buy and Sell Stock | Easy |
| Design Hit Counter | Medium |
| Rotate Array | Medium |
| Valid Sudoku | Medium |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Course Schedule | Medium |
| Product of Array Except Self | Medium |
| Valid Palindrome | Easy |
| Reverse Words in a String | Medium |
| Spiral Matrix | Medium |
| Best Time to Buy and Sell Stock II | Medium |
Unique to Qualcomm (19)
Problems in Qualcomm's list that do not appear at Apple.
| Problem | Difficulty |
|---|---|
| Maximum Number of Ones | Hard |
| Palindrome Number | Easy |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
| Linked List Cycle | Easy |
| Pow(x, n) | Medium |
| Count Array Pairs Divisible by K | Hard |
| Majority Element | Easy |
| Count the Number of Fair Pairs | Medium |
| Last Substring in Lexicographical Order | Hard |
| Peak Index in a Mountain Array | Medium |
| Unique Paths | Medium |
Frequently Asked Questions
How many LeetCode questions do Apple and Qualcomm share?
Apple and Qualcomm share 43 LeetCode interview questions. 257 problems appear only in Apple's list and 19 appear only in Qualcomm's list.
What topics overlap most between Apple and Qualcomm?
The most common shared topics between Apple and Qualcomm are Array (15 shared questions), Two Pointers (8 shared questions), Linked List (6 shared questions), String (5 shared questions), Divide and Conquer (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or Qualcomm?
Apple has 76 Easy, 178 Medium, and 46 Hard questions. Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Apple has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Apple and Qualcomm?
Start with the 43 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 19 Qualcomm-specific questions to round out your prep.