Qualcomm vs Yandex Interview Questions
Qualcomm lists 62 LeetCode interview questions while Yandex lists 128. They share 25 problems — 40% of Qualcomm's bank and 20% of Yandex's. Focus on the overlap first, then drill into 37 Qualcomm-only and 103 Yandex-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 25 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Qualcomm and Yandex.
Step 2 — Company-specific depth: Add Qualcomm-specific problems like String Compression III, Maximum Number of Ones, Reverse Nodes in k-Group and Yandex-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
25 Shared Questions
High-priority problems to practice for both Qualcomm and Yandex.
| Problem | Difficulty |
|---|---|
| Number of Islands | Medium |
| LRU Cache | Medium |
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Reverse Linked List | Easy |
| Valid Parentheses | Easy |
| Palindrome Number | Easy |
| Remove Nth Node From End of List | Medium |
| Linked List Cycle | Easy |
| Move Zeroes | Easy |
| Implement Queue using Stacks | Easy |
| Majority Element | Easy |
| Trapping Rain Water | Hard |
| Swap Nodes in Pairs | Medium |
| Is Subsequence | Easy |
| Remove Duplicates from Sorted Array | Easy |
| Merge Intervals | Medium |
| Reverse Integer | Medium |
| Merge Sorted Array | Easy |
| Median of Two Sorted Arrays | Hard |
| Subarray Sum Equals K | Medium |
| Generate Parentheses | Medium |
| Merge k Sorted Lists | Hard |
| Container With Most Water | Medium |
| Merge Two Sorted Lists | Easy |
Unique to Qualcomm (37)
Problems in Qualcomm's list that do not appear at Yandex.
| Problem | Difficulty |
|---|---|
| String Compression III | Medium |
| Maximum Number of Ones | Hard |
| Reverse Nodes in k-Group | Hard |
| Reverse Bits | Easy |
| 3Sum | Medium |
| Rotate Image | Medium |
| Power of Two | Easy |
| Rectangle Overlap | Easy |
| Reverse String | Easy |
| Middle of the Linked List | Easy |
| Pow(x, n) | Medium |
| Design Circular Queue | Medium |
Unique to Yandex (103)
Problems in Yandex's list that do not appear at Qualcomm.
| Problem | Difficulty |
|---|---|
| Longest Subarray of 1's After Deleting One Element | Medium |
| Summary Ranges | Easy |
| Maximize Distance to Closest Person | Medium |
| Find K Closest Elements | Medium |
| String Compression | Medium |
| Valid Palindrome II | Easy |
| One Edit Distance | Medium |
| Permutation in String | Medium |
| Isomorphic Strings | Easy |
| Line Reflection | Medium |
| Longest Palindromic Substring | Medium |
| Longest Strictly Increasing or Strictly Decreasing Subarray | Easy |
Frequently Asked Questions
How many LeetCode questions do Qualcomm and Yandex share?
Qualcomm and Yandex share 25 LeetCode interview questions. 37 problems appear only in Qualcomm's list and 103 appear only in Yandex's list.
What topics overlap most between Qualcomm and Yandex?
The most common shared topics between Qualcomm and Yandex are Array (11 shared questions), Two Pointers (8 shared questions), Linked List (7 shared questions), Hash Table (6 shared questions), String (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Qualcomm or Yandex?
Qualcomm has 28 Easy, 25 Medium, and 9 Hard questions. Yandex has 51 Easy, 67 Medium, and 10 Hard questions. Qualcomm has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Qualcomm and Yandex?
Start with the 25 shared problems since they cover what both companies ask most often. Then add 20 Qualcomm-specific and 20 Yandex-specific questions to round out your prep.