Coupang vs IBM Interview Questions
Coupang lists 49 LeetCode interview questions while IBM lists 115. They share 8 problems — 16% of Coupang's bank and 7% of IBM's. Focus on the overlap first, then drill into 41 Coupang-only and 107 IBM-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 8 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Coupang and IBM.
Step 2 — Company-specific depth: Add Coupang-specific problems like Decode String, LFU Cache, Longest Substring with At Most K Distinct Characters and IBM-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Coupang skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
8 Shared Questions
High-priority problems to practice for both Coupang and IBM.
| Problem | Difficulty |
|---|---|
| Word Break | Medium |
| Subsets | Medium |
| LRU Cache | Medium |
| Find Pivot Index | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Group Anagrams | Medium |
| Increasing Triplet Subsequence | Medium |
| Maximum Number of Tasks You Can Assign | Hard |
Unique to Coupang (41)
Problems in Coupang's list that do not appear at IBM.
| Problem | Difficulty |
|---|---|
| Decode String | Medium |
| LFU Cache | Hard |
| Longest Substring with At Most K Distinct Characters | Medium |
| Split BST | Medium |
| Range Module | Hard |
| Course Schedule | Medium |
| Design In-Memory File System | Hard |
| Unique Paths II | Medium |
| Design Twitter | Medium |
| Shopping Offers | Medium |
| Longest Repeating Substring | Medium |
| Unique Paths | Medium |
Unique to IBM (107)
Problems in IBM's list that do not appear at Coupang.
| Problem | Difficulty |
|---|---|
| Find the Smallest Divisor Given a Threshold | Medium |
| Gray Code | Medium |
| 3Sum | Medium |
| Exclusive Time of Functions | Medium |
| Integer to Roman | Medium |
| Minimum Operations to Make Columns Strictly Increasing | Easy |
| Fizz Buzz | Easy |
| Roman to Integer | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Count Ways to Group Overlapping Ranges | Medium |
| Two Sum | Easy |
| Meeting Rooms II | Medium |
Frequently Asked Questions
How many LeetCode questions do Coupang and IBM share?
Coupang and IBM share 8 LeetCode interview questions. 41 problems appear only in Coupang's list and 107 appear only in IBM's list.
What topics overlap most between Coupang and IBM?
The most common shared topics between Coupang and IBM are Array (6 shared questions), Hash Table (4 shared questions), String (3 shared questions), Sorting (2 shared questions), Greedy (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Coupang or IBM?
Coupang has 2 Easy, 33 Medium, and 14 Hard questions. IBM has 33 Easy, 73 Medium, and 9 Hard questions. Coupang has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Coupang and IBM?
Start with the 8 shared problems since they cover what both companies ask most often. Then add 20 Coupang-specific and 20 IBM-specific questions to round out your prep.