Oracle vs Qualcomm Interview Questions
Oracle lists 314 LeetCode interview questions while Qualcomm lists 62. They share 38 problems — 12% of Oracle's bank and 61% of Qualcomm's. Focus on the overlap first, then drill into 276 Oracle-only and 24 Qualcomm-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 38 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Oracle and Qualcomm.
Step 2 — Company-specific depth: Add Oracle-specific problems like Group Anagrams, Top K Frequent Elements, Sliding Window Maximum and Qualcomm-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Oracle skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
38 Shared Questions
High-priority problems to practice for both Oracle and Qualcomm.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Number of Islands | Medium |
| Two Sum | Easy |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Container With Most Water | Medium |
| 3Sum | Medium |
| Reverse Linked List | Easy |
| Trapping Rain Water | Hard |
| Generate Parentheses | Medium |
| Longest Common Prefix | Easy |
| Median of Two Sorted Arrays | Hard |
| Kth Largest Element in an Array | Medium |
| Majority Element | Easy |
| Move Zeroes | Easy |
| Subarray Sum Equals K | Medium |
| Palindrome Number | Easy |
| Rotate Image | Medium |
| Course Schedule II | Medium |
| Merge Two Sorted Lists | Easy |
| Remove Duplicates from Sorted Array | Easy |
| Permutations | Medium |
| Linked List Cycle | Easy |
| Reverse Integer | Medium |
| Pow(x, n) | Medium |
| Merge Sorted Array | Easy |
| Climbing Stairs | Easy |
| Edit Distance | Medium |
Showing top 30 of 38 shared problems.
Unique to Oracle (276)
Problems in Oracle's list that do not appear at Qualcomm.
| Problem | Difficulty |
|---|---|
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Meeting Rooms II | Medium |
| Longest Palindromic Substring | Medium |
| Spiral Matrix | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
| LFU Cache | Hard |
| Search in Rotated Sorted Array | Medium |
| Asteroid Collision | Medium |
| Remove All Adjacent Duplicates in String II | Medium |
| Longest Consecutive Sequence | Medium |
Unique to Qualcomm (24)
Problems in Qualcomm's list that do not appear at Oracle.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Maximum Number of Ones | Hard |
| Reverse Bits | Easy |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
| Reverse String | Easy |
| Middle of the Linked List | Easy |
| Count Array Pairs Divisible by K | Hard |
| String to Integer (atoi) | Medium |
| Implement Queue using Stacks | Easy |
| Count the Number of Fair Pairs | Medium |
| Last Substring in Lexicographical Order | Hard |
Frequently Asked Questions
How many LeetCode questions do Oracle and Qualcomm share?
Oracle and Qualcomm share 38 LeetCode interview questions. 276 problems appear only in Oracle's list and 24 appear only in Qualcomm's list.
What topics overlap most between Oracle and Qualcomm?
The most common shared topics between Oracle and Qualcomm are Array (16 shared questions), Two Pointers (7 shared questions), Hash Table (6 shared questions), Linked List (5 shared questions), String (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Oracle or Qualcomm?
Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Oracle has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Oracle and Qualcomm?
Start with the 38 shared problems since they cover what both companies ask most often. Then add 20 Oracle-specific and 20 Qualcomm-specific questions to round out your prep.